FOOTWEAR

Abstract

Footwear (1A) with a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area (R1) that supports a toe section and a ball section of the wearer's foot, a midfoot area (R2) that supports an arch section of the wearer's foot, and a rearfoot area (R3) that supports a heel section of the wearer's foot, the forefoot area (R1), the midfoot area (R2), and the rearfoot area (R3) are arranged in a continuous manner along a front-to-back direction of the footwear (1A), the forefoot area (R1) has a medial forefoot area (A) and a lateral forefoot area (B) that are defined by a shoe center (SC) of the footwear when viewed along a direction perpendicular to the ground-contacting surface, and the midfoot area (R2) has a medial midfoot area (C) and a lateral midfoot area (D). has,which are defined by the shoe center (SC) of the footwear when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area (R3) has a medial rearfoot area (E) and a lateral rearfoot area (F) which are defined by the shoe center (SC) of the footwear when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section (SA) formed from a three-dimensional mesh structure body (2A) in which several unit structures (3A) are repeatedly arranged to be adjacent to each other, the cushioning section (SA) being located across the medial forefoot area (A), the lateral forefoot area (B), the medial midfoot area (C), the lateral midfoot area (D), the medial rearfoot area (E) and the lateral rearfoot area (F), an intake volume ratio of the cushioning section (SA) in a section,that is located in the medial forefoot area (A) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral forefoot area (B); an intake volume ratio of the cushioning section (SA) in a section located in the medial midfoot area (C) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral midfoot area (D); an intake volume ratio of the cushioning section (SA) in a section located in the medial rearfoot area (E) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral rearfoot area (F); the intake volume ratio of the cushioning section (SA) in the section located in the medial forefoot area (A) is less than the intake volume ratio of the cushioning section (SA) in the section located in the medial forefoot area (A).the section located in the medial midfoot area (C), the intake volume ratio of the cushioning section (SA) in the section located in the lateral forefoot area (B) is smaller than the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D), the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C) is equal to or less than the intake volume ratio of the cushioning section (SA) in the section located in the medial hindfoot area (E), and the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D) is equal to or less than the intake volume ratio of the cushioning section (SA) in the section located in the lateral hindfoot area (F).

Description

Cross-reference to related registration This application claims priority over Japanese patent application No. 2023-142978, the disclosure of which is incorporated herein in its entirety by reference. BACKGROUND Technical field The present disclosure concerns footwear. Background information In recent years, the entirety or part of a sole or insole of footwear has been constructed from a molded object formed by three-dimensional additive manufacturing. For example, JP 2018-187363A and US 2018 / 0049514A1 disclose a shoe with a sole produced by three-dimensional additive manufacturing, and US 2018 / 0228401A1 discloses an insole produced by three-dimensional additive manufacturing. Further footwear with a footbed made of three-dimensional mesh structures is known from EP 4000441A1, EP 4108115A1, and EP 4212053A1. SUMMARY In general, footwear is required to have various functions depending on its use or similar factors. For example, the required properties differ significantly between footwear used for running, which involves many kicking and landing movements, and footwear used for specific ball sports, exemplified by tennis and basketball, which involve many abbreviated movements. Furthermore, even within the case of footwear used for running, the required properties differ considerably between heel strike, midfoot strike, and forefoot strike. In this respect, when a sole and insole are manufactured by three-dimensional additive manufacturing, various structural improvements to the sole and insole can be made due to the high degree of design freedom; thus, it is possible to provide high-performance footwear with a function adapted to various uses. However, as far as the present inventors are aware, footwear with a sole or insole improved based on such a consideration is still not sufficient in a practical sense. Therefore, the present disclosure has been made in view of the circumstances described above and permits the provision of footwear that has a function more suitable for an intended use. A footwear according to the present disclosure has a footbed that supports the sole of a wearer's foot and has a ground-contacting surface. The footbed has a forefoot area that supports a toe and ball portion of the wearer's foot, a midfoot area that supports an arch portion of the wearer's foot, and a rearfoot area that supports a heel portion of the wearer's foot. The forefoot, midfoot, and rearfoot areas are arranged to be continuous along a front-to-back direction of the footwear. The forefoot area has a medial forefoot area and a lateral forefoot area, which are defined by a shoe center of the footwear when viewed along a direction perpendicular to the ground-contacting surface.The midfoot area comprises a medial midfoot area and a lateral midfoot area, defined by the center of the shoe when viewed perpendicular to the ground-contacting surface. The rearfoot area also comprises a medial rearfoot area and a lateral rearfoot area, defined by the center of the shoe when viewed perpendicular to the ground-contacting surface. The footbed features a cushioning section formed from a three-dimensional mesh structure in which multiple unit structures are repeatedly arranged adjacent to one another. This cushioning section extends across the medial forefoot, lateral forefoot, medial midfoot, lateral midfoot, medial rearfoot, and lateral rearfoot. In the footwear according to a first aspect of the present disclosure, the intake volume ratio of the cushioning section in a section located in the medial forefoot area is greater than the intake volume ratio of the cushioning section in a section located in the lateral forefoot area, the intake volume ratio of the cushioning section in a section located in the medial midfoot area is greater than the intake volume ratio of the cushioning section in a section located in the lateral midfoot area, the intake volume ratio of the cushioning section in a section located in the medial rearfoot area is greater than the intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, the intake volume ratio of the cushioning section in the section located in the medial forefoot area,is smaller than the intake volume ratio of the cushioning section in the section located in the medial midfoot area, the intake volume ratio of the cushioning section in the section located in the lateral forefoot area is smaller than the intake volume ratio of the cushioning section in the section located in the lateral midfoot area, the intake volume ratio of the cushioning section in the section located in the medial midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the medial rearfoot area, and the intake volume ratio of the cushioning section in the section located in the lateral midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the lateral rearfoot area. In a footwear according to a second aspect of the present disclosure, the intake volume ratio of the cushioning section in a section located in the medial forefoot area is greater than the intake volume ratio of the cushioning section in a section located in the lateral forefoot area, the intake volume ratio of the cushioning section in a section located in the medial midfoot area is greater than the intake volume ratio of the cushioning section in a section located in the lateral midfoot area, the intake volume ratio of the cushioning section in a section located in the medial rearfoot area is greater than the intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, the intake volume ratio of the cushioning section in the section located in the medial forefoot area,The intake volume ratio of the cushioning section in the section located in the medial midfoot area is equal to or greater than the intake volume ratio of the cushioning section in the section located in the lateral forefoot area. The intake volume ratio of the cushioning section in the section located in the medial midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the medial hindfoot area. The intake volume ratio of the cushioning section in the section located in the lateral midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the lateral hindfoot area. In a footwear according to a third aspect of the present disclosure, the intake volume ratio of the cushioning section in a section located in the medial forefoot area is smaller than the intake volume ratio of the cushioning section in a section located in the lateral forefoot area, the intake volume ratio of the cushioning section in a section located in the medial midfoot area is smaller than the intake volume ratio of the cushioning section in a section located in the lateral midfoot area, the intake volume ratio of the cushioning section in a section located in the medial rearfoot area is smaller than the intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, and the intake volume ratio of the cushioning section in the section located in the medial forefoot area is smaller than the intake volume ratio of the cushioning section in the section located in the medial forefoot area.is smaller than the intake volume ratio of the cushioning section in the section located in the medial midfoot area, the intake volume ratio of the cushioning section in the section located in the lateral forefoot area is smaller than the intake volume ratio of the cushioning section in the section located in the lateral midfoot area, the intake volume ratio of the cushioning section in the section located in the medial midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the medial rearfoot area, and the intake volume ratio of the cushioning section in the section located in the lateral midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the lateral rearfoot area. In a footwear according to a fourth aspect of the present disclosure, the intake volume ratio of the cushioning section in a section located in the medial forefoot area is smaller than the intake volume ratio of the cushioning section in a section located in the lateral forefoot area, the intake volume ratio of the cushioning section in a section located in the medial midfoot area is smaller than the intake volume ratio of the cushioning section in a section located in the lateral midfoot area, the intake volume ratio of the cushioning section in a section located in the medial rearfoot area is smaller than the intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, and the intake volume ratio of the cushioning section in the section located in the medial forefoot area is smaller than the intake volume ratio of the cushioning section in the section located in the medial forefoot area.The intake volume ratio of the cushioning section in the section located in the medial midfoot area is equal to or greater than the intake volume ratio of the cushioning section in the section located in the lateral forefoot area. The intake volume ratio of the cushioning section in the section located in the medial midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the medial hindfoot area. The intake volume ratio of the cushioning section in the section located in the lateral midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the lateral hindfoot area. According to the present disclosure, it is possible to provide footwear that has a function more suitable for an intended use. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded view of a footwear according to a first embodiment; Fig. 2 is a perspective view of the insole shown in Fig. 1, viewed obliquely from the upper right front; Fig. 3 is a perspective view of the footwear shown in Fig. 1, viewed obliquely from the lower left rear; Fig. 4 is a top view of the insole shown in Fig. 1; Fig. 5 is a side view of the insole shown in Fig. 1, viewed from the lateral side of the foot; Fig. 6 is a partially cut-away perspective view of the insole shown in Fig. 1 along line VI-VI, as shown in Figs. 2, 4, and 5; Fig. 7 is a schematic view to explain a three-dimensional structure of a base layer section of the insole shown in Fig. 1; Fig.Figure 8 is a schematic bottom view to explain an income volume ratio distribution of an insole according to a first design example; Figure 9 is a schematic bottom view to explain an income volume ratio distribution of an insole according to a second design example; Figure 10 is a schematic bottom view to explain an income volume ratio distribution of an insole according to a third design example; Figure 11 is a schematic bottom view to explain an income volume ratio distribution of an insole according to a fourth design example; Figure 12 is a schematic view to explain a three-dimensional structure of a base layer section of an insole enclosed in footwear according to a first modification; FigureFigure 13 is a schematic view illustrating the three-dimensional structure of a base layer section of an insole incorporated into a footwear according to a second modification; Figure 14 is a perspective view of a footwear according to a second embodiment; Figure 15 is a perspective view of a footwear according to a third embodiment; Figure 16 is a schematic cross-sectional view along line XVI-XVI shown in Figure 15; and Figure 17 is an exploded view of the footwear shown in Figure 15. DETAILED DESCRIPTION Exemplary embodiments of the present disclosure are described in detail below with reference to the drawings. In the following exemplary embodiments, the same or common parts are designated by the same reference numerals in the drawings, and their description is not repeated. <Erstes Ausführungsbeispiel> Fig. 1 is an exploded view of a footwear according to a first embodiment, and Figs. 2 and 3 are perspective views of the insole shown in Fig. 1, viewed obliquely from the upper right front side and the lower left rear side, respectively. Fig. 4 is a top view of the insole shown in Fig. 1, and Fig. 5 is a side view of the insole shown in Fig. 1, viewed from the lateral side of the foot. Fig. 6 is a partially cut-away perspective view of the insole shown in Fig. 1 along line VI-VI, as shown in Figs. 2, 4, and 5, and Fig. 7 is a schematic view to explain a three-dimensional structure of a base layer section of the insole shown in Fig. 1.First, a schematic design of a footwear 1A according to the present embodiment and an insole 20A, which is included in the footwear 1A, is described with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig. 7. As shown in Fig. 1, the footwear 1A comprises a shoe body 10 and an insole 20A. The shoe body 10 has a sole 11 and an upper, or shaft 14, which is situated above the sole 11. The sole 11 has a substantially flat shape, and the shaft 14 has a pocket-like shape that covers a portion of the wearer's foot, excluding the sole. The insole 20A has a substantially flat shape and is inserted into the interior of the shoe body 10. The sole 11 has a midsole 12A and an outsole 13, and the outsole 13 is fixed to the underside of the midsole 12A, for example by gluing or the like. The underside of the outsole 13 forms a ground-contacting surface 15, and the midsole 12A is a section that primarily supports the wearer's foot. The midsole 12A preferably has excellent cushioning performance and can, for example, be made of a resin foam material. The outsole 13 preferably has excellent wear resistance and grip performance and can, for example, be made of a rubber component. The upper part of the upper 14 has a shoe opening 16 through which the wearer's foot is inserted, and a space inside the upper 14, into which the wearer's foot rests when the shoe is worn, is formed. The lower end of the upper 14 is fixed to the top of the midsole 12A, for example by gluing or the like. A woven fabric, knitted fabric, non-woven fabric, synthetic leather, resin, or the like is used for the upper 14. In particular, in a shoe that requires breathability and lightness, a double raschel warp knit fabric with polyester yarn interwoven is used. The insole 20A is inserted into the shoe body 10 through the shoe opening 16 described above, which is provided on the upper 14. Accordingly, the insole 20A is positioned on the inner bottom surface of the shoe body 10 such that its underside faces the inner bottom surface, thus mounting or attaching the insole 20A to the shoe body 10. When the insole 20A is mounted in the shoe body 10, its upper surface forms a support surface that supports the sole of the wearer's foot. In a state where the wearer is wearing the footwear 1A, the sole 11 acts as a footbed, and the insole 20A supports the sole of the wearer's foot. At this time, the insole 20A is sandwiched between the sole 11 of the shoe body 10 and the sole of the wearer's foot. As shown in Figs. 2, 3, 4 to 5, the insole 20A has a substantially flat shape, and its outer shape in a top view corresponds substantially to the outer shape of the inner bottom surface of the shoe body 10. The insole 20A is formed from a single component and is constructed from a molded object produced by three-dimensional additive manufacturing. Three-dimensional additive manufacturing, for example, is of the stereolithography type. In Fig. 4, an outer shape line of the shoe body 10 (i.e., an outer shape line of the footwear 1A) in a state in which the insole 20A is mounted in the shoe body 10 is indicated by a dash-double-dot line. As shown in Fig. 4, the footbed, which has the sole 11 and the insole 20A, is divided into a forefoot area R1, which supports a toe and ball portion of the wearer's foot, a midfoot area R2, which supports an arch portion of the wearer's foot, and a rearfoot area R3, which supports a heel portion of the wearer's foot, along the front-back direction (top-bottom direction in Fig. 4), which corresponds to a longitudinal direction of the wearer's foot in a top view. Here, if a front end of the footbed is taken as a reference, and a position corresponding to a dimension of 40% of the dimension of the footbed in the anterior-posterior direction from the front end is defined as a first boundary position, and a position corresponding to a dimension of 70% of the dimension of the footbed in the anterior-posterior direction from the front end is defined as a second boundary position, then forefoot area R1 corresponds to a section encompassed between the front end and the first boundary position along the anterior-posterior direction, midfoot area R2 corresponds to a section encompassed between the first boundary position and the second boundary position along the anterior-posterior direction, and rearfoot area R3 corresponds to a section encompassed between the second boundary position and a rear end of the shoe sole along the anterior-posterior direction. Furthermore, the footbed is divided along the left-right direction (the left-right direction shown in Fig. 4), which is a direction that corresponds to the width direction of the wearer's foot in a top view, into the following: a section of the foot on the medial side of the foot (a section on the S1 side shown in Fig. 4), which is the median side (i.e., the side closer to the median) in the standard anatomical position; and a section of the foot on the lateral side of the foot (a section on the S2 side shown in Fig. 4), which is the opposite side (i.e., the side farther from the median) to the median side in the standard anatomical position. Here is the boundary line that divides the footbed into a section on the medial side of the foot and a section on the lateral side of the foot, a so-called shoe center SC. The shoe center SC is a straight line obtained, when the footwear 1A is worn by a standard wearer with a foot size suitable for the footwear 1A, by projecting, onto the footbed along the top-bottom direction, a straight line connecting a section between the first toe and the second toe of the wearer and a central section (so-called heel center (the heel center is marked with the reference symbol HC in Fig. 4, etc.)) of the wearer's calcaneus. The anterior and posterior ends of the footbed, described above, are end sections of the footbed located on the shoe center SC. The top-bottom direction of the insole 20A, which will be described later, refers to a direction that coincides with the thickness direction of the insole 20A, which has a flat shape (i.e., the top-bottom direction in Fig. 5). Specifically, the top-bottom direction is a direction perpendicular to both the front-back direction, which is a direction that coincides with the longitudinal direction of the wearer's foot as described above, and the left-right direction, which is a direction that coincides with the width direction of the wearer's foot as described above. Here, a section on the medial side of the foot, encompassed in the forefoot region R1, is referred to as the medial forefoot region, designated by reference numeral A in Fig. 4, and a section on the lateral side of the foot, encompassed in the forefoot region R1, is referred to as the lateral forefoot region, designated by reference numeral B in Fig. 4. Similarly, a section on the medial side of the foot, encompassed in the midfoot region R2, is referred to as the medial midfoot region, designated by reference numeral C in Fig. 4, and a section on the lateral side of the foot, encompassed in the midfoot region R2, is referred to as the lateral midfoot region, designated by reference numeral D in Fig. 4. Likewise, a section on the medial side of the foot, encompassed in the hindfoot region R3, is referred to as the medial hindfoot region, designated in Fig.4 is marked with reference numeral E, and a section on the lateral side of the foot, which is included in the hindfoot region R3, is referred to as the lateral hindfoot region, which is marked with reference numeral F in Fig. 4. As shown in Figs. 2, 3, 4, 5 to 6, the insole 20A has a base layer section 21 and an upper layer section 22, each designed to form a layer. The base layer section 21 has a top surface 21a (see especially Fig. 6) and a bottom surface 21b and forms a section on the underside of the insole 20A. The upper layer section 22 has a top surface 22a and a bottom surface 22b (see especially Fig. 6) and covers the top surface 21a of the base layer section 21 to form a section on the upper side of the insole 20A. That is, the insole 20A has a two-layer structure with the base layer section 21 and the upper layer section 22. As described above, since the insole 20A is formed from a single component, the upper surface 21a of the base layer section 21 and the lower surface 22b of the upper layer section 22 are designed to be continuous with each other. That is, the upper surface 21a of the base layer section 21 and the lower surface 22b of the upper layer section 22 meet at the interfaces of the base layer section 21 and the upper layer section 22, where a structural difference, which will be described later, is created. As shown in Fig. 7, the base layer section 21 is formed from a three-dimensional mesh structure body 2A in which several unit structures 3A, each having a three-dimensional lattice structure, are repeatedly arranged adjacent to one another. Here, in the insole 20A, which is included in the footwear 1A according to the present embodiment, the unit structures 3A are repeatedly and continuously arranged along three axial directions that are substantially perpendicular to one another, thereby providing a large number of holes in the interior of the base layer section 21 and on its outer surface. Specifically, the multiple unit structures 3A are arranged repeatedly and continuously in a regular manner along each of the width direction (the X-direction shown in the drawing), the depth direction (the Y-direction shown in the drawing), and the height direction (the Z-direction shown in the drawing). In Fig. 7, only three adjacent unit structures 3A in each of the width, depth, and height directions are shown, and cross-sectional surfaces of these are indicated with a dark color. Unit structure 3A, which has a three-dimensional lattice structure, has a three-dimensional form in which several columns, each extending along a predetermined direction, are interconnected. Various structures can be used as unit structure 3A, such as a rectangular parallel-flat lattice, a diamond lattice, an octahedral lattice, a double pyramidal lattice, a fluorite-type lattice, or a lattice to which various supports are added. The unit structure 3A shown is a rectangular parallel-flat lattice to which a central support has been added. In the case where the base layer section 21 of the insole 20A is formed from the three-dimensional mesh structure body 2A as described above, it is preferred that the outer shape of the three-dimensional mesh structure body 2A is a shape that fits the outer shape of the insole 20A by deforming the individual unit structures 3A as necessary. In this way, the outer surface of the insole 20A can be formed into a smooth shape. As shown in Figs. 2, 3, 4, 5 to 6, by arranging the base layer section 21, which is designed as described above, in the section on the lower side of the insole 20A, the base layer section 21 functions as the cushioning section SA, which has high deformability. By providing the cushioning section SA, which is formed from the three-dimensional mesh structure body 2A, in the insole 20A as described above, the insole 20A can have high deformability; therefore, it is possible to provide an insole with excellent cushioning performance and good foot comfort, and it is also possible to provide an insole with improved stability when worn.Furthermore, since the base layer section 21 has the design described above, the insole can be made light relative to its size, and the insole can also be provided with excellent air permeability. The underside 21b of the base layer section 21 is arranged to face the inner bottom surface of the shoe main body 10 in a state where the insole 20A is mounted in the shoe main body 10. Although the underside 21b of the base layer section 21 has a concave-convex shape due to the large number of holes described above, the underside 21 is designed to be essentially flat when viewed as a whole. A symbol or design element, such as a letter, logo, pattern, or authentication identification code, may also be provided on the underside 21b of the base layer section 21 by shaping as necessary. On the other hand, as shown in Figs. 2, 3, 4, 5 to 6, the upper layer section 22 is formed from a sheet-like structural body. The upper layer section 22, formed from the sheet-like structural body, is provided with several holes 22c that extend through the upper layer section 22 in the thickness direction (i.e., the top-bottom direction of the insole 20A). Each of the several holes 22c is exposed on the upper surface 22a of the upper layer section 22 and faces the base layer section 21 on the underside 22b of the upper layer section 22. Therefore, most of the several holes 22c, in conjunction with holes provided inside the base layer section 21 and on its outer surface, are located at the interface between the upper layer section 22 and the base layer section 21. Furthermore, a section corresponding to the forefoot area R1 is designed to have an essentially flat shape, and sections corresponding to the midfoot area R2 and the rearfoot area R3 are designed to have an essentially concave shape, such that the upper surface 22a of the upper layer section 22 fits the sole of the wearer's foot. Although the multiple holes 22c are located on the upper surface 22a of the upper layer section 22, as described above, the upper surface 22a has a smooth shape. By arranging the upper layer section 22, which is designed as described above, in the section on the upper side of the insole 20A, the base layer section, in which a large number of holes are present on the inside and on the outer surface and a large number of fine irregularities are thus formed on the top 21a, is covered by the upper layer section 22, and the top of the insole 20A, which is a section that is in contact with the sole of the user's foot, is formed by the smoothly designed top 22a of the upper layer section 22, which is formed from the leaf-like structural body, making it possible not only to provide an insole with good foot contact and good foot comfort, but also an insole with excellent air permeability. Furthermore, by arranging the upper layer section 22, which is designed as described above, in the section on the upper side of the insole 20A, the contact area with the sole of the wearer's foot is also increased, making it possible to provide an insole with improved stability when worn and also to provide an insole that can effectively distribute foot pressure. Moreover, since the base layer section 21, which is formed from the three-dimensional mesh structure body 2A, is protected by the upper layer section 22, it is possible to provide an insole with excellent durability. The material of insole 20A is not particularly limited, but a resin or rubber material is preferred to provide suitable flexibility, elasticity, durability, elastic strength, stability, and the like. Specifically, if insole 20A is made of a resin, for example, a polyolefin resin, an ethylene-vinyl acetate copolymer (EVA), a polyamide-based thermoplastic elastomer (TPA, TPAE), a thermoplastic polyurethane (TPU), or a polyester-based thermoplastic elastomer (TPEE) could be used. On the other hand, if insole 20A is made of rubber, butadiene rubber (PR) could be used, for example. The insole 20A can also be made from a polymer composition. In this case, examples of the polymer contained in the polymer composition include olefin-based polymers such as an olefin-based elastomer and an olefin-based resin. Examples of olefin-based polymers include polyolefins such as polyethylene (for example, linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE), and the like), polypropylene, an ethylene-propylene copolymer, a propylene-1-hexene copolymer, a propylene-4-methyl-1-pentene copolymer, a propylene-1-butene copolymer, an ethylene-1-hexene copolymer, an ethylene-4-methylpentene copolymer, an ethylene-1-butene copolymer, a 1-butene-1-hexene copolymer, and a 1-butene-4-methylpentene copolymer, an ethylene-methacrylic acid copolymer, an ethylene-methyl methacrylate copolymer, an ethylene-ethyl methacrylate copolymer, an ethylene-butyl methacrylate copolymer, an ethylene-methyl acrylate copolymer, and an ethylene-ethyl acrylate copolymer.an ethylene-butyl acrylate copolymer, a propylene-methacrylic acid copolymer, a propylene-methyl methacrylate copolymer, a propylene-ethyl methacrylate copolymer and a propylene-butyl methacrylate copolymer, a propylene-methyl acrylate copolymer, a propylene-ethyl acrylate copolymer, a propylene-butyl acrylate copolymer, an ethylene-vinyl acetate copolymer and a propylene-vinyl acetate copolymer. The polymer can be, for example, an amide-based polymer such as an amide-based elastomer or an amide-based resin. Examples of amide-based polymers include polyamide 6, polyamide 11, polyamide 12, polyamide 66, and polyamide 610. The polymer can be, for example, an ester-based polymer such as an ester-based elastomer or an ester-based resin. Examples of ester-based polymers include polyethylene terephthalate and polybutylene terephthalate. The polymer can be a urethane-based polymer, such as a urethane-based elastomer or a urethane-based resin. Examples of urethane-based polymers include polyester-based polyurethane and polyether-based polyurethane. The polymer can be a styrene-based polymer, such as a styrene-based elastomer or a styrene-based resin. Examples of styrene-based elastomers include a styrene-ethylene-butylene copolymer (SEB), a styrene-butadiene-styrene copolymer (SBS), a hydrogenated product of an SBS (styrene-ethylene-butylene-styrene copolymer (SEBS)), a styrene-isoprene-styrene copolymer (SIS), a hydrogenated product of an SIS (styrene-ethylene-propylene-styrene copolymer (SEPS)), a styrene-isobutylene-styrene copolymer (SIBS), styrene-butadiene-styrene-butadiene (SBSB), and styrene-butadiene-styrene-butadiene-styrene (SBSBS). Examples of styrene-based resins include polystyrene, acrylonitrile styrene resin (AS), and acrylonitrile butadiene styrene resin (ABS). The polymer can be, for example, an acrylic polymer such as polymethyl methacrylate, a urethane-based acrylic polymer, a polyester-based acrylic polymer, a polyether-based acrylic polymer, a polycarbonate-based acrylic polymer, an epoxy-based acrylic polymer, an acrylic polymer based on a conjugated diene polymer and a hydrogenated product thereof, a urethane-based methacrylic polymer, a polyester-based methacrylic polymer, a polyether-based methacrylic polymer, a polycarbonate-based methacrylic polymer, a polyester-based urethane acrylate, a polycarbonate-based urethane acrylate, a polyether-based urethane acrylate, an epoxy-based methacrylic polymer, a methacrylic polymer based on a conjugated diene polymer and a hydrogenated product thereof, a polyvinyl chloride-based resin, a silicone-based elastomer, butadiene rubber, isoprene rubber (IR), chloroprene rubber (CR), natural rubber (NR), styrene-butadiene rubber (SBR),Acrylonitrile butadiene rubber (NBR) and butyl rubber (IIR) are used. As described above, since the insole 20A is preferably made of a flexible material, it is particularly preferred that the insole 20A, of the materials described above, be made of a urethane acrylate. If the insole 20A is made of the urethane acrylate, not only will excellent durability and elasticity be obtained, but sufficient elastic strength will also be maintained. As described above, since the insole 20A is manufactured, for example, by three-dimensional additive manufacturing of the stereolithography type, the insole 20A may include a curing agent as an auxiliary component. It should be noted that, with regard to the footwear 1A according to the present embodiment, an exemplary case is shown in which the insole 20A is designed to have the following: the base layer section 21, which has the cushioning section SA formed from the three-dimensional mesh structure body 2A; and the upper layer section 22, which has the sheet structure body, which covers the base layer section 21. However, the upper layer section 22 is not necessarily provided, and the insole 20A can be designed to have only the base layer section 21, which has the cushioning section SA formed from the three-dimensional mesh structure body 2A. As described above, in the footwear 1A according to the present embodiment, the cushioning section SA, which is formed from the three-dimensional mesh structure body 2A, is included in the insole 20A, which is placed on and used on the sole 11 of the shoe body 10. Since the cushioning section SA can be manufactured by three-dimensional additive manufacturing, as described above, various structural improvements can be made to the insole 20A due to the high degree of design freedom it offers. In this respect, the insole 20 in the footwear 1A according to the present embodiment can be designed like, for example, insoles 20A1 to 20A3 according to the first to third design examples described below, depending on the use of the footwear 1A. Here, the intake volume ratio in the damping section SA, which will be described later, represents a ratio of the volume of a solid section (i.e., a section other than the holes (hollow section) described above) to a predetermined volume of the three-dimensional mesh structure body 2A. Generally, a section with a large intake volume ratio has high stiffness, and a section with a small intake volume ratio has low stiffness.Although a specific size of the intake-volume ratio in the damping section SA is not particularly limited, the intake-volume ratio is approximately 5% or more and 80% or less, the intake-volume ratio is approximately 30% or more (in some cases 35% or more) in a section provided with high stiffness, and the intake-volume ratio is approximately less than 30% (in some cases 25% or less) in a section provided with low stiffness. As a method to differentiate the intake volume ratio in the cushioning section SA for each section, as described later, it is considered, for example, to change the size of the unit structure 3A described above for each section of the cushioning section SA, to change the thickness of the columns of the unit structure 3A for each section of the cushioning section SA, or to change the structure of the unit structure 3A itself for each section of the cushioning section SA. Of these, to differentiate the intake volume ratio of the cushioning section SA for each section without impairing foot contact, it is particularly effective to design the cushioning section SA such that the size of the unit structure 3A changes gradually. Furthermore, a method for calculating the intake volume ratio is as follows: the specific density of the material forming the three-dimensional mesh structure body 2A is measured; sections corresponding to the medial forefoot area, the lateral forefoot area, the medial midfoot area, the lateral midfoot area, the medial hindfoot area, and the lateral hindfoot area in the present disclosure are cut out of the three-dimensional mesh structure body 2A; the volumes (including the solid and hollow sections described above) and weights of the respective cut-out sections are measured; and each intake volume ratio can be calculated from the specific density, volume, and weight. (First design example) Fig. 8 is a schematic underside view illustrating the revenue volume ratio distribution of an insole according to a first design example. An insole 20A1 according to the first design example is described below with reference to Fig. 8. The footwear 1A, which is fitted with the insole 20A1, is a running shoe intended, for example, for heel strike or midfoot strike running. It is required that running shoes designed for heel strike or midfoot strike running provide a high degree of stability to a section on the medial side of the wearer's foot upon landing, from the point of view of preventing so-called overpronation; and that they have an excellent function of supporting a section from the heel area to the medial and lateral longitudinal arch of the wearer's foot, from the point of view of preventing fatigue accumulation and injury associated with heel strike. To ensure high stability in the medial aspect of the foot upon landing, it is effective to increase the stiffness of the medial section of the footbed to a greater degree than the stiffness of the lateral section. To achieve excellent support for the area from the heel to the medial and lateral longitudinal arches of the foot, it is effective to increase the stiffness of the midfoot (R2) and rearfoot (R3) sections of the footbed. In this respect, as shown in Fig. 8, in the insole 20A1 according to the first design example, the damping section SA, which is formed from the three-dimensional mesh structure body 2A, is designed to meet the following conditions 1-1 to 1-7. Condition 1-1: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B. Condition 1-2: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 1-3: the intake volume ratio of the cushioning section SA in the section located in the medial rearfoot area E is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral rearfoot area F. Condition 1-4: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is smaller than the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C. Condition 1-5: the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 1-6: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is equal to or less than the intake volume ratio of the cushioning section SA in the section located in the medial hindfoot area E. Condition 1-7: the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D is equal to or less than the intake volume ratio of the cushioning section SA in the section located in the lateral hindfoot area F. In Fig. 8, the intake volume ratio distribution of a section along the shoe center SC is represented by the graph on the left side of the drawing, and the intake volume ratio distribution of a section along a line 100 that is perpendicular to the shoe center SC and passes through the heel center HC, which are shown in the drawing, is represented by the graph on the bottom side of the drawing. If the cushioning section SA is designed to meet conditions 1-1 to 1-3 of the above conditions, it is possible to increase the stiffness of the section on the medial side of the footbed to be higher than the stiffness of the section on the lateral side of the foot. Therefore, if the foot covering 1A is designed to meet conditions 1-1 to 1-3, it is possible to provide a foot covering that can give high stability to the section on the medial side of the wearer's foot upon landing. Furthermore, if the cushioning section SA is designed to meet conditions 1-4 to 1-7 of the above conditions, it is possible to increase the stiffness of the midfoot area R2 and the rearfoot area R3 to be higher than the stiffness of the forefoot area R1 of the footbed, and it is possible to make the stiffness of the rearfoot area R3 of the footbed equal to or higher than the stiffness of the midfoot area R2. Therefore, if the footwear 1A is designed to meet conditions 1-4 to 1-7, it is possible to provide a footwear that can achieve excellent function in supporting a section from the heel area to the medial and lateral longitudinal arch of the wearer's foot. Therefore, if the footwear 1A is designed to meet conditions 1-1 to 1-7, it is possible to provide footwear that is particularly suitable for heel striking or midfoot striking. In a case where a clear functional difference is provided by the midfoot area R2 and the rearfoot area R3, the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C may be made smaller than the intake volume ratio of the cushioning section SA in the section located in the medial rearfoot area E, and the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D may be made smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral rearfoot area F. From the perspective of preventing deterioration of foot contact, a design is preferred in which large changes in the stiffness of the damping section SA do not occur locally. For this purpose, it is preferred to design the damping section SA such that the intake volume ratio changes gradually, as illustrated by the graphs shown in Fig. 8. Furthermore, from the perspective of improving the fit with the wearer's foot and enabling stable support, as illustrated by the graphs shown in Fig. 8, it is preferred to increase the stiffness of the circumferential edge section of the damping section SA. (Second design example) Fig. 9 is a schematic underside view illustrating the revenue volume ratio distribution of an insole according to a second design example. An insole 20A2 according to the second design example is described below with reference to Fig. 9. The footwear 1A, which is fitted with the insole 20A2, is a running shoe intended, for example, for forefoot running. For running shoes designed for forefoot striking, it is particularly necessary to provide high stability to the medial side of the foot upon landing, in order to prevent overpronation; to efficiently transfer the force of toe-off from the toes to the ground, in order to improve propulsion during toe-off; to provide excellent support for the medial and lateral longitudinal arches of the foot, in order to prevent fatigue and injury; and to offer high cushioning for the heel upon landing, in order to absorb shock. To ensure high stability in the medial part of the foot upon landing, it is effective to increase the stiffness of this section of the footbed to a level higher than that of the lateral part. To achieve excellent support for the medial and lateral longitudinal arches of the foot, while efficiently transferring the force of toe-off from the toes to the ground, it is effective to increase the stiffness of the forefoot (R1) and midfoot (R2) sections of the footbed. To provide high cushioning for the heel upon landing, it is effective to increase the stiffness of the rearfoot (R3) section, provided it is not excessively higher than that of the forefoot (R1) and midfoot (R2) sections of the footbed. In this respect, as shown in Fig. 9, in the insole 20A2 according to the second design example, the damping section SA, which is formed from the three-dimensional mesh structure body 2A, is designed to meet the following conditions 2-1 to 2-7. Condition 2-1: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B. Condition 2-2: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 2-3: the intake volume ratio of the cushioning section SA in the section located in the medial hindfoot area E is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral hindfoot area F. Condition 2-4: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is equal to or greater than the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C. Condition 2-5: the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B is equal to or greater than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 2-6: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is greater than the intake volume ratio of the cushioning section SA in the section located in the medial hindfoot area E. Condition 2-7: the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral hindfoot area F. In Fig. 9, the revenue volume ratio distribution of a section along the shoe center SC is represented by the graph on the left side of the drawing, and the revenue volume ratio distribution of a section along a line 100 that is perpendicular to the shoe center SC and passes through the heel center HC shown in the drawing is represented by the graph on the bottom side of the drawing. If the cushioning section SA is designed to meet conditions 2-1 to 2-3 of the above conditions, it is possible to increase the stiffness of the section on the medial side of the footbed to be higher than the stiffness of the section on the lateral side of the foot. Therefore, if the foot covering 1A is designed to meet conditions 2-1 to 2-3, it is possible to provide a foot covering that can give high stability to the section on the medial side of the wearer's foot upon landing. Furthermore, if the cushioning section SA is designed to meet conditions 2-4 to 2-7 of the above conditions, it is possible to increase the stiffness of the forefoot area R1 and the midfoot area R2 of the footbed, and it is possible to increase the stiffness of the rearfoot area R3, provided that it is not excessively higher than the stiffness of the forefoot area R1 and the midfoot area R2 of the footbed. Therefore, if the footwear 1A is designed to meet conditions 2-4 to 2-7, it is possible to provide footwear that efficiently transfers the toe-off force from the toe area of ​​the wearer's foot to the ground, and that is capable of providing high cushioning performance for the heel area of ​​the wearer's foot upon landing, while also providing excellent support for the medial and lateral longitudinal arches of the wearer's foot. Therefore, if the footwear 1A is designed to meet conditions 2-1 to 2-7, it is possible to provide footwear that is particularly suitable for forefoot running. In a case where a clear functional difference is provided by the forefoot area R1 and the midfoot area R2, the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A can be made larger than the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C, and the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B can be made larger than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. From the perspective of preventing deterioration of foot contact, a design is preferred in which large changes in the stiffness of the damping section SA do not occur locally. For this purpose, it is preferred to design the damping section SA such that the intake volume ratio changes gradually, as illustrated by the graphs shown in Fig. 9. Additionally, from the perspective of improving the fit with the wearer's foot and enabling stable support, as illustrated by the graphs shown in Fig. 9, it is preferred to increase the stiffness of the circumferential edge section of the damping section SA. (Third design example) Fig. 10 is a schematic underside view illustrating the revenue volume ratio distribution of an insole according to a third design example. An insole 20A3 according to the third design example is described below with reference to Fig. 10. Furthermore, the footwear 1A, fitted with the insole 20A3, is a shoe intended for use in specific ball sports, exemplified by tennis. For shoes used in specific ball sports, exemplified by tennis, it is particularly necessary to provide high stability for a section on the lateral side of the wearer's foot during rotational movements, because many truncated movements are involved; and to have excellent function in supporting a section from the heel area to the medial and lateral longitudinal arch of the wearer's foot, from the point of view of preventing fatigue accumulation and injury associated with heel striking. To provide high stability to the lateral side of the foot during rotational movements, it is effective to increase the stiffness of the lateral section of the footbed to a greater degree than the stiffness of the medial section. To achieve excellent support for the area from the heel to the medial and lateral longitudinal arches of the foot, it is effective to increase the stiffness of the midfoot (R2) and rearfoot (R3) sections of the footbed. In this respect, as shown in Fig. 10, in the insole 20A3 according to the third design example, the damping section SA, which is formed from the three-dimensional mesh structure body 2A, is designed to meet the following conditions 3-1 to 3-7. Condition 3-1: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B. Condition 3-2: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 3-3: the intake volume ratio of the cushioning section SA in the section located in the medial hindfoot area E is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral hindfoot area F. Condition 3-4: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is smaller than the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C. Condition 3-5: the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 3-6: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is equal to or less than the intake volume ratio of the cushioning section SA in the section located in the medial hindfoot area E. Condition 3-7: the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D is equal to or less than the intake volume ratio of the cushioning section SA in the section located in the lateral hindfoot area F. In Fig. 10, the intake volume ratio distribution of a section along the shoe center SC is represented by the graph on the left side of the drawing, and the intake volume ratio distribution of a section along a line 100 that is perpendicular to the shoe center SC and passes through the heel center HC, which are shown in the drawing, is represented by the graph on the bottom side of the drawing. If the damping section SA is designed to meet conditions 3-1 to 3-3 of the preceding conditions, it is possible to increase the stiffness of the section on the lateral side of the footbed to be higher than the stiffness of the section on the medial side of the foot. Therefore, if the foot covering 1A is designed to meet conditions 3-1 to 3-3, it is possible to provide a foot covering that can give high stability to the section on the lateral side of the wearer's foot during rotational movements. Furthermore, if the cushioning section SA is designed to meet conditions 3-4 to 3-7 of the above conditions, it is possible to increase the stiffness of the midfoot area R2 and the rearfoot area R3 to be higher than the stiffness of the forefoot area R1 of the footbed, and it is possible to make the stiffness of the rearfoot area R3 of the footbed equal to or higher than the stiffness of the midfoot area R2. Therefore, if the footwear 1A is designed to meet conditions 3-4 to 3-7, it is possible to provide a footwear that can achieve excellent function in supporting a section from the heel area to the medial and lateral longitudinal arch of the wearer's foot. Therefore, if the footwear 1A is designed to meet conditions 3-1 to 3-7, it is possible to provide footwear that is particularly suitable for specific ball sports, exemplified by tennis, which involve many truncated movements and frequent heel strikes. In a case where a clear functional difference is provided by the midfoot area R2 and the rearfoot area R3, the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C may be made smaller than the intake volume ratio of the cushioning section SA in the section located in the medial rearfoot area E, and the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D may be made smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral rearfoot area F. From the perspective of preventing a deterioration of foot contact, a design is preferred in which large changes in the stiffness of the damping section SA do not occur locally. For this reason, it is preferred to design the damping section SA such that the intake volume ratio changes gradually, as illustrated by the graphs shown in Fig. 10. Additionally, from the point of view of improving the fit with the base of the support and enabling stable support, as illustrated by the graphs shown in Fig. 10, it is preferred to increase the stiffness of the circumferential edge section of the damping section SA. (Fourth design example) Fig. 11 is a schematic floor view to explain a revenue volume ratio distribution of an insole according to a fourth design example. Below, an insole 20A4 according to the fourth design example with reference to Fig. 11 is described. Furthermore, the footwear 1A, which is fitted with the insole 20A4, is a shoe intended for use in specific ball sports, exemplified by table tennis and basketball. For shoes used in specific ball sports, exemplified by table tennis and basketball, it is particularly necessary to provide a section on the lateral side of the wearer's foot with high stability during slashed movements, because many slashed movements are involved; and to provide a function to efficiently transfer the toe-off force from the toe and ball of the foot to the ground, from the point of view of improving locomotion during toe-off. To provide high stability to a section on the lateral side of the wearer's foot during rotational movements, it is effective to increase the stiffness of this section of the footbed to a greater degree than that of the section on the medial side. To efficiently transfer the force of toe-off from the toe and ball of the foot to the ground, it is effective to increase the stiffness of the forefoot (R1) and midfoot (R2) sections of the footbed. In this respect, as shown in Fig. 11, in the insole 20A4 according to the fourth design example, the damping section SA, which is formed from the three-dimensional mesh structure body 2A, is designed to meet the following conditions 4-1 to 4-7. Condition 4-1: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B. Condition 4-2: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 4-3: the intake volume ratio of the cushioning section SA in the section located in the medial hindfoot area E is smaller than the intake volume ratio of the cushioning section SA in the section located in the lateral hindfoot area F. Condition 4-4: the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A is equal to or greater than the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C. Condition 4-5: the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B is equal to or greater than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. Condition 4-6: the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C is greater than the intake volume ratio of the cushioning section SA in the section located in the medial hindfoot area E. Condition 4-7: the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D is greater than the intake volume ratio of the cushioning section SA in the section located in the lateral hindfoot area F. In Fig. 11, the revenue volume ratio distribution of a section along the shoe center SC is represented by the graph on the left side of the drawing, and the revenue volume ratio distribution of a section along a line 100 that is perpendicular to the shoe center SC and passes through the heel center HC, which are shown in the drawing, is represented by the graph on the bottom side of the drawing. If the damping section SA is designed to meet conditions 4-1 to 4-3 of the above conditions, it is possible to increase the stiffness of the section on the lateral side of the footbed to be higher than the stiffness of the section on the medial side of the foot. Therefore, if the foot covering 1A is designed to meet conditions 4-1 to 4-3, it is possible to provide a foot covering that can give high stability to the section on the lateral side of the wearer's foot during rotational movements. Furthermore, if the cushioning section SA is designed to meet conditions 4-4 to 4-7 of the forefoot conditions, it is possible to make the stiffness of the forefoot area R1 of the footbed equal to or greater than the stiffness of the midfoot area R2, and it is possible to increase the stiffness of the midfoot area R2 of the footbed to be greater than the stiffness of the rearfoot area R3. Therefore, if the footwear 1A is designed to meet conditions 4-4 to 4-7, it is possible to provide footwear that performs the function of efficiently transferring the toe-off force from the toe and ball of the foot of the wearer to the ground. Therefore, if the footwear 1A is designed to meet conditions 4-1 to 4-7, it is possible to provide footwear suitable for specific ball sports, exemplified by table tennis and basketball, which involve many truncated movements and require the exertion of a toe-pull force from the toe section and the ball section. In a case where a clear functional difference is provided by the forefoot area R1 and the midfoot area R2, the intake volume ratio of the cushioning section SA in the section located in the medial forefoot area A can be made larger than the intake volume ratio of the cushioning section SA in the section located in the medial midfoot area C, and the intake volume ratio of the cushioning section SA in the section located in the lateral forefoot area B can be made larger than the intake volume ratio of the cushioning section SA in the section located in the lateral midfoot area D. From the perspective of preventing a deterioration of foot contact, a design is preferred in which large changes in the stiffness of the damping section SA do not occur locally. For this reason, it is preferred to design the damping section SA such that the intake volume ratio changes gradually, as illustrated by the graphs shown in Fig. 11. Furthermore, from the point of view of improving the fit with the base of the support and enabling stable support, as illustrated by the graphs shown in Fig. 11, it is preferable to increase the stiffness of the circumferential edge section of the damping section SA. As described above, the footwear 1A designed according to the present embodiment can provide footwear that has a more suitable function for an intended use. It should be noted that the revenue volume ratio distribution in the thickness direction of the damping section SA is assumed to be either the following first embodiment or second embodiment. In the first embodiment, the intake volume ratio in a section of the damping section SA on the side of the ground-contacting surface 15 (i.e., the bottom side) is made larger than the intake volume ratio in a section of the damping section SA on the side (i.e., the top side) opposite the side of the ground-contacting surface 15. In such a design, since the section of the damping section SA on the bottom side has high hardness and the section of the damping section SA on the top side has low hardness, the strength of the damping section SA on the side of the ground-contacting surface 15 is increased to improve durability. In the second embodiment, the intake volume ratio in a section of the damping section SA on the side of the ground-contacting surface 15 (i.e., the bottom side) is made smaller than the intake volume ratio in a section of the damping section SA on the side (i.e., the top side) opposite the side of the ground-contacting surface 15. In such a design, since the section of the damping section SA on the bottom side has low hardness and the section of the damping section SA on the top side has high hardness, the deformability of the damping section SA is improved to enhance damping performance. <Erste Modifikation> Fig. 12 is a schematic view illustrating the three-dimensional structure of a base layer section of an insole incorporated into a footwear according to a first modification. An insole 20B incorporated into the footwear according to the first modification, based on the first embodiment described above, is described below with reference to Fig. 12. The design of the insole 20B, which is included in the footwear according to the first modification, differs only in that the base layer section 21 has a different three-dimensional structure compared to the insole 20A, which is included in the footwear 1A according to the first embodiment described above. Specifically, as shown in Fig. 12, the base layer section 21 of the insole 20B, which is included in the footwear according to the first modification, is formed from a three-dimensional mesh structure body 2B in which several unit structures 3B, having a three-dimensional wall structure, are repeatedly arranged adjacent to one another. Specifically, the several unit structures 3B are repeatedly and continuously arranged in a regular manner along each of the width direction (X-direction shown in the drawing), the depth direction (Y-direction shown in the drawing), and the height direction (Z-direction shown in the drawing). In Fig. 12, only three adjacent unit structures 3B in each of the width, depth, and height directions are shown, and cross-sectional surfaces of these are indicated in black. Unit structure 3B, which has a three-dimensional wall structure, has a three-dimensional shape formed by a wall whose outer form is defined by a pair of curved surfaces that are parallel to each other. Here, unit structure 3B is based on the Schwarz-P structure, which is a type of mathematically defined triple-periodic minimal surface with a thickness added to it. Furthermore, the minimal surface is defined as a curved surface that has the smallest area of ​​curved surfaces bounded by a given closed curve. If the damping section SA, formed from the three-dimensional mesh structure body 2B, is designed to meet conditions 1-1 to 1-7 as described in the first design example above, conditions 2-1 to 2-7 as described in the second design example above, conditions 3-1 to 3-7 as described in the third design example above, or conditions 4-1 to 4-7 as described in the fourth design example above, it is possible to provide a foot covering that has a more suitable function for an intended use, including in the insole 20B included in the foot covering according to the first modification. Furthermore, for example, a structure based on other triple periodic minimal surfaces, such as the gyroid structure or the Schwarz-D structure, with a thickness added to these, can also be used as the unit structure 3B, which is formed from a three-dimensional wall structure having a three-dimensional shape formed by a wall whose outer shape is defined by a pair of curved surfaces that are parallel to each other. <Zweite Modifikation> Fig. 13 is a schematic view illustrating the three-dimensional structure of a base layer section of an insole incorporated into a footwear according to a second modification. An insole 20C incorporated into the footwear according to the second modification, based on the first embodiment described above, is described below with reference to Fig. 13. The design of the insole 20C, which is included in the footwear according to the second modification, differs only in that the base layer section 21 has a different three-dimensional structure compared to the insole 20A, which is included in the footwear 1A according to the first embodiment described above. Specifically, as shown in Fig. 13, the base layer section 21 of the insole 20C, which is included in the footwear according to the second modification, is formed from a three-dimensional mesh structure 2C in which several unit structures 3C, having a three-dimensional wall structure, are repeatedly arranged adjacent to one another. Specifically, the several unit structures 3C are repeatedly and continuously arranged in a regular manner along each of the width direction (X-direction shown in the drawing), the depth direction (Y-direction shown in the drawing), and the height direction (Z-direction shown in the drawing). In Fig. 13, only five adjacent unit structures 3C in each of the width and depth directions and only two adjacent unit structures 3C in the height direction are shown. Unit structure 3B, which has a three-dimensional wall structure, has a three-dimensional shape formed by a wall whose outer shape is defined by a pair of flat surfaces that are parallel to each other. Here, unit structure 3C is based on several planes arranged to intersect each other and to contain a cavity, with a thickness added to the planes, and is specifically an octet structure with a thickness added to it. If the damping section SA, which is formed from the three-dimensional mesh structure 2C, is designed to meet conditions 1-1 to 1-7 as described in the first design example above, conditions 2-1 to 2-7 as described in the second design example above, conditions 3-1 to 3-7 as described in the third design example above, or conditions 4-1 to 4-7 as described in the fourth design example above, it is possible to provide a foot covering that has a more suitable function for an intended use, also in the insole 20C included in the foot covering according to the second modification. Furthermore, a structure based on another type of multiple levels arranged to intersect each other and having a cavity within it, exemplified by a cubic structure, a cubic octet structure, and the like, with a thickness added to it, can also be used as the unit structure 3C, which is formed from a three-dimensional wall structure having a three-dimensional shape formed by a wall whose outer shape is defined by a pair of flat surfaces parallel to each other. <Zweites Ausführungsbeispiel> Fig. 14 is a perspective view of footwear according to a second embodiment. Below, footwear 1B according to the present embodiment is described with reference to Fig. 14. As shown in Fig. 14, the footwear 1B has a sole 11 as the footbed and a shaft 14 located above the sole 11. The sole 11 has a sole body 12B and an outsole 13. The sole body 12B is enclosed in the footwear 1B instead of the midsole 12A of the footwear 1A as described above in the first embodiment. The footwear 1B according to the present embodiment does not have the insole 20A of the footwear according to the first embodiment described above. In the footwear 1B according to the present embodiment, the sole body 12B is constructed from a molded object produced by three-dimensional additive manufacturing. Three-dimensional additive manufacturing is, for example, stereolithography. Specifically, the sole body 12B is formed from the three-dimensional mesh structure 2A shown in Fig. 7. Therefore, the entirety of the sole body 12B described above functions as the cushioning section SA of the sole 11 of the footbed, which is formed from the three-dimensional mesh structure 2A. It should be noted that the material 12B of the sole body 12B is not particularly limited. However, the same material as that used for the insole 20A, which is described in the first embodiment above, can be used. In the footwear 1B according to the present embodiment, the damping section SA, which is formed from the three-dimensional mesh structure body 2A, is also designed such that conditions 1-1 to 1-7, which are described in the first design example described above, conditions 2-1 to 2-7, which are described in the second design example described above, conditions 3-1 to 3-7, which are described in the third design example described above, or conditions 4-1 to 4-7, which are described in the fourth design example described above, are met. Therefore, even in the case of footwear 1B according to the present embodiment, it is possible to obtain an effect that is the same as the effect described in the first embodiment described above, and it is possible to provide footwear that has a more suitable function for an intended use. <Drittes Ausführungsbeispiel> Fig. 15 is a perspective view of a footwear according to a third embodiment, and Fig. 16 is a schematic cross-sectional view along line XVI-XVI shown in Fig. 15. Furthermore, Fig. 17 is an exploded view of the footwear shown in Fig. 15. Below, a footwear 1C according to the present embodiment is described with reference to Figs. 15, 16 to 17. As shown in Figs. 15, 16 to 17, the footwear 1C has a sock-like shape that substantially covers the entire foot of the wearer (i.e., a section on the distal side of the ankle) and has a shell or outer skin 30 and an upper main body 40. Both the outer skin 30 and the upper main body 40 have a pocket-like shape. The footwear 1C according to the present embodiment does not have the insole 20A of the footwear 1A according to the first embodiment described above. The outer skin 30 has a sole section 31 and an outer upper section 32. The sole section 31 is essentially flat, and its underside forms the ground-contacting surface 15. The outer upper section 32 rests on the circumferential edge of the sole section 31. An opening section 33 is provided in an upper part of the outer upper section 32. The upper main body 40 has a base section 41 and an inner upper section 42. The base section 41 is essentially flat, and its upper surface forms a support surface that supports the sole of the wearer's foot when worn. The inner upper section 42 rests on the circumferential edge of the base section 41. An upper part of the inner upper section 42 is provided with a shoe opening 16 through which the wearer's foot is inserted. The upper main body 40 is housed within the outer skin 30 such that its base section 41 is positioned above the sole section 31 of the outer skin 30, and the inner upper section 42 overlaps with the outer upper section 32 of the outer skin 30. Therefore, in the footwear 1C, the footbed is formed by the sole section 31 of the outer skin 30 and the base section 41 of the upper main body 40. Since the upper main body 40 forms a section that is to be brought into contact with the base of the support, it is preferred that the upper main body 40 be formed from a component that can be flexibly deformed, and the upper main body 40 may be formed from, for example, a woven fabric, a knitted fabric, a nonwoven fabric, synthetic leather, a resin, or the like. As will be described later, if a woven fabric, a knitted fabric, a nonwoven fabric, or the like is made of synthetic fibers that have heat shrinkage properties, the base of the support can be more easily fitted. Examples of synthetic fibers that have heat shrinkage properties include fibers that are mainly made of, for example, polyester, polyurethane, or the like. That is to say, in a case where the upper main body 40 is formed from a woven, knitted, nonwoven or the like of synthetic fibers having heat shrinkage properties, when the upper main body 40 is provisionally formed into a pocket shape and a heat treatment is carried out in a state in which a strip, which will be described later, is inserted into the interior of this, the shape is changed to a state in which the upper main body 40 is in close contact with the formed surface of the strip by heat shrinkage due to heating, and the shape after the change is maintained. Therefore, if a mold adapted to the shape of the wearer's foot is provided and the upper main body 40 is formed using this mold as described above, the upper main body 40 adapted to the wearer's foot can be manufactured. Furthermore, if the heat treatment is carried out using the mold described above in a state where the upper main body 40 is embedded in the outer skin 30, the upper main body 40 is also adapted to the outer skin 30, and it is possible to further improve the fit properties. In the footwear 1C according to the present embodiment, the sole section 31 is formed from a shaped object produced by three-dimensional additive manufacturing. Three-dimensional additive manufacturing is, for example, stereolithography. The sole section 31 of the outer skin 30 is formed from the three-dimensional mesh structure body 2A, as shown in Fig. 7. Therefore, the entire sole section 31 functions as the footbed, specifically as the cushioning section SA formed from the three-dimensional mesh structure body 2A. It should be noted that the material of the outer skin 30 is not particularly limited. However, the same material as that used for the insole 20A, as described in the first embodiment above, can be used. In the footwear 1C according to the present embodiment, the damping section SA, which is formed from the three-dimensional mesh structure body 2A, is also designed such that conditions 1-1 to 1-7, which are described in the first design example described above, conditions 2-1 to 2-7, which are described in the second design example described above, conditions 3-1 to 3-7, which are described in the third design example described above, or conditions 4-1 to 4-7, which are described in the fourth design example described above, are met. Therefore, even in the case of footwear 1C according to the present embodiment, it is possible to obtain an effect that is the same as the effect described in the first embodiment described above, and it is possible to provide footwear that has a more suitable function for an intended use. <Zusammenfassung der Offenbarung in Ausführungsbeispielen und dergleichen> Characteristic features disclosed in the exemplary embodiments and the like described above are summarized as follows. [Supplementary grade 1] A footwear has a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area that supports a toe section and a ball section of the wearer's foot, a midfoot area that supports an arch section of the wearer's foot, and a rearfoot area that supports a heel section of the wearer's foot; the forefoot area, midfoot area, and rearfoot area are arranged to be continuous along a front-to-back direction of the footwear; the forefoot area has a medial forefoot area and a lateral forefoot area, which are defined by a shoe center of the footwear when viewed along a direction perpendicular to the ground-contacting surface; the midfoot area has a medial midfoot area and a lateral midfoot area, which are defined by the shoe center of the footwear.when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area has a medial rearfoot area and a lateral rearfoot area defined by the shoe center of the footwear, when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section formed from a three-dimensional mesh structure body in which several unit structures are repeatedly arranged to be adjacent to each other, the cushioning section being located across the medial forefoot area, the lateral forefoot area, the medial midfoot area, the lateral midfoot area, the medial rearfoot area, and the lateral rearfoot area, an intake volume ratio of the cushioning section in a section located in the medial forefoot area is greater than an intake volume ratio of the cushioning section in a section,which is located in the lateral forefoot area, an intake volume ratio of the cushioning section in a section located in the medial midfoot area is greater than an intake volume ratio of the cushioning section in a section located in the lateral midfoot area, an intake volume ratio of the cushioning section in a section located in the medial rearfoot area is greater than an intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, the intake volume ratio of the cushioning section in the section located in the medial forefoot area is less than the intake volume ratio of the cushioning section in the section located in the medial midfoot area, the intake volume ratio of the cushioning section in the section located in the lateral forefoot area,is smaller than the intake volume ratio of the cushioning section in the section located in the lateral midfoot area, the intake volume ratio of the cushioning section in the section located in the medial midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the medial hindfoot area, and the intake volume ratio of the cushioning section in the section located in the lateral midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the lateral hindfoot area. [Supplementary grade 2] A footwear has a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area that supports a toe section and a ball section of the wearer's foot, a midfoot area that supports an arch section of the wearer's foot, and a rearfoot area that supports a heel section of the wearer's foot; the forefoot area, midfoot area, and rearfoot area are arranged to be continuous along a front-to-back direction of the footwear; the forefoot area has a medial forefoot area and a lateral forefoot area, which are defined by a shoe center of the footwear when viewed along a direction perpendicular to the ground-contacting surface; the midfoot area has a medial midfoot area and a lateral midfoot area, which are defined by the shoe center of the footwear.when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area has a medial rearfoot area and a lateral rearfoot area defined by the shoe center of the footwear, when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section formed from a three-dimensional mesh structure body in which several unit structures are repeatedly arranged to be adjacent to each other, the cushioning section being located across the medial forefoot area, the lateral forefoot area, the medial midfoot area, the lateral midfoot area, the medial rearfoot area, and the lateral rearfoot area, an intake volume ratio of the cushioning section in a section located in the medial forefoot area is greater than an intake volume ratio of the cushioning section in a section,which is located in the lateral forefoot area, an intake volume ratio of the cushioning section in a section located in the medial midfoot area is greater than an intake volume ratio of the cushioning section in a section located in the lateral midfoot area, an intake volume ratio of the cushioning section in a section located in the medial rearfoot area is greater than an intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, the intake volume ratio of the cushioning section in the section located in the medial forefoot area is equal to or greater than the intake volume ratio of the cushioning section in the section located in the medial midfoot area, the intake volume ratio of the cushioning section in the section located in the lateral forefoot area,equal to or greater than the intake volume ratio of the cushioning section in the section located in the lateral midfoot area, the intake volume ratio of the cushioning section in the section located in the medial midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the medial hindfoot area, and the intake volume ratio of the cushioning section in the section located in the lateral midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the lateral hindfoot area. [Supplementary grade 3] A footwear has a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area that supports a toe section and a ball section of the wearer's foot, a midfoot area that supports an arch section of the wearer's foot, and a rearfoot area that supports a heel section of the wearer's foot; the forefoot area, midfoot area, and rearfoot area are arranged to be continuous along a front-to-back direction of the footwear; the forefoot area has a medial forefoot area and a lateral forefoot area, which are defined by a shoe center of the footwear when viewed along a direction perpendicular to the ground-contacting surface; the midfoot area has a medial midfoot area and a lateral midfoot area, which are defined by the shoe center of the footwear.when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area has a medial rearfoot area and a lateral rearfoot area defined by the shoe center of the footwear, when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section formed from a three-dimensional mesh structure body in which several unit structures are repeatedly arranged to be adjacent to each other, the cushioning section being located across the medial forefoot area, the lateral forefoot area, the medial midfoot area, the lateral midfoot area, the medial rearfoot area, and the lateral rearfoot area, an intake volume ratio of the cushioning section in a section located in the medial forefoot area is smaller than an intake volume ratio of the cushioning section in a section,which is located in the lateral forefoot area, an intake volume ratio of the cushioning section in a section located in the medial midfoot area is smaller than an intake volume ratio of the cushioning section in a section located in the lateral midfoot area, an intake volume ratio of the cushioning section in a section located in the medial rearfoot area is smaller than an intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, the intake volume ratio of the cushioning section in the section located in the medial forefoot area is smaller than the intake volume ratio of the cushioning section in the section located in the medial midfoot area, the intake volume ratio of the cushioning section in the section located in the lateral forefoot area,is smaller than the intake volume ratio of the cushioning section in the section located in the lateral midfoot area, the intake volume ratio of the cushioning section in the section located in the medial midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the medial hindfoot area, and the intake volume ratio of the cushioning section in the section located in the lateral midfoot area is equal to or less than the intake volume ratio of the cushioning section in the section located in the lateral hindfoot area. [Supplementary grade 4] A footwear has a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area that supports a toe section and a ball section of the wearer's foot, a midfoot area that supports an arch section of the wearer's foot, and a rearfoot area that supports a heel section of the wearer's foot; the forefoot area, midfoot area, and rearfoot area are arranged to be continuous along a front-to-back direction of the footwear; the forefoot area has a medial forefoot area and a lateral forefoot area, which are defined by a shoe center of the footwear when viewed along a direction perpendicular to the ground-contacting surface; the midfoot area has a medial midfoot area and a lateral midfoot area, which are defined by the shoe center of the footwear.when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area has a medial rearfoot area and a lateral rearfoot area defined by the shoe center of the footwear, when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section formed from a three-dimensional mesh structure body in which several unit structures are repeatedly arranged to be adjacent to each other, the cushioning section being located across the medial forefoot area, the lateral forefoot area, the medial midfoot area, the lateral midfoot area, the medial rearfoot area, and the lateral rearfoot area, an intake volume ratio of the cushioning section in a section located in the medial forefoot area is smaller than an intake volume ratio of the cushioning section in a section,which is located in the lateral forefoot area, an intake volume ratio of the cushioning section in a section located in the medial midfoot area is smaller than an intake volume ratio of the cushioning section in a section located in the lateral midfoot area, an intake volume ratio of the cushioning section in a section located in the medial rearfoot area is smaller than an intake volume ratio of the cushioning section in a section located in the lateral rearfoot area, the intake volume ratio of the cushioning section in the section located in the medial forefoot area is equal to or greater than the intake volume ratio of the cushioning section in the section located in the medial midfoot area, the intake volume ratio of the cushioning section in the section located in the lateral forefoot area,equal to or greater than the intake volume ratio of the cushioning section in the section located in the lateral midfoot area, the intake volume ratio of the cushioning section in the section located in the medial midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the medial hindfoot area, and the intake volume ratio of the cushioning section in the section located in the lateral midfoot area is greater than the intake volume ratio of the cushioning section in the section located in the lateral hindfoot area. [Supplementary grade 5] The footwear according to one of the supplementary grades 1 to 4, wherein the three-dimensional net structure body has a three-dimensional grid structure. [Supplementary grade 6] The footwear according to one of the supplementary notes 1 to 4, wherein the three-dimensional net structure body has a three-dimensional wall structure formed by a wall, and the outer shape of the wall is defined by a pair of flat or curved surfaces that are parallel to each other. [Supplementary grade 7] The footwear according to supplementary note 6, wherein the three-dimensional wall structure has a structure based on a triple periodic minimal surface as a reference surface, with a thickness added to the reference surface. [Supplementary grade 8] The footwear according to supplementary note 6, wherein the three-dimensional wall structure has a structure based on, as a reference surface, several levels arranged to intersect each other and to have a cavity within it, with a thickness added to the reference surface. [Supplementary grade 9] The footwear according to one of the supplementary notes 1 to 8, wherein the cushioning section is formed from a single object shaped by three-dimensional additive manufacturing. [Supplementary grade 10] The footwear according to one of the supplementary grades 1 to 9, wherein the footbed has a sole, and wherein the sole has the cushioning section. [Supplementary grade 11] The footwear according to one of the supplementary notes 1 to 9, wherein the footbed has a sole and an insole, and wherein the insole has the cushioning section. <Andere Formen und dergleichen> In the exemplary embodiments described above and the like, the uses of the footwear have been shown and described, in particular by way of example, as running shoes designed for heel striking, midfoot striking, forefoot striking, or the like, and shoes used for specific sports, exemplified by tennis, table tennis, basketball, or the like. However, the use (sports or the like) of the shoes is not limited to these. The embodiments described above and the like disclosed herein are in every respect illustrative and not limiting. The technical scope of the present invention is defined by the claims and includes all modifications within the meaning and scope equivalent to the description of the claims.

Claims

Footwear (1A) with a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area (R1) that supports a toe section and a ball section of the wearer's foot, a midfoot area (R2) that supports an arch section of the wearer's foot, and a rearfoot area (R3) that supports a heel section of the wearer's foot, the forefoot area (R1), the midfoot area (R2), and the rearfoot area (R3) are arranged in a continuous manner along a front-to-back direction of the footwear (1A), the forefoot area (R1) has a medial forefoot area (A) and a lateral forefoot area (B) that are defined by a shoe center (SC) of the footwear when viewed along a direction perpendicular to the ground-contacting surface, and the midfoot area (R2) has a medial midfoot area (C) and a lateral midfoot area (D). has,which are defined by the shoe center (SC) of the footwear when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area (R3) has a medial rearfoot area (E) and a lateral rearfoot area (F) which are defined by the shoe center (SC) of the footwear when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section (SA) formed from a three-dimensional mesh structure body (2A) in which several unit structures (3A) are repeatedly arranged to be adjacent to each other, the cushioning section (SA) being located across the medial forefoot area (A), the lateral forefoot area (B), the medial midfoot area (C), the lateral midfoot area (D), the medial rearfoot area (E) and the lateral rearfoot area (F), an intake volume ratio of the cushioning section (SA) in a section,that is located in the medial forefoot area (A) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral forefoot area (B); an intake volume ratio of the cushioning section (SA) in a section located in the medial midfoot area (C) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral midfoot area (D); an intake volume ratio of the cushioning section (SA) in a section located in the medial rearfoot area (E) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral rearfoot area (F); the intake volume ratio of the cushioning section (SA) in the section located in the medial forefoot area (A) is less than the intake volume ratio of the cushioning section (SA) in the section located in the medial forefoot area (A).the section located in the medial midfoot area (C), the intake volume ratio of the cushioning section (SA) in the section located in the lateral forefoot area (B) is smaller than the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D), the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C) is equal to or less than the intake volume ratio of the cushioning section (SA) in the section located in the medial hindfoot area (E), and the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D) is equal to or less than the intake volume ratio of the cushioning section (SA) in the section located in the lateral hindfoot area (F). Footwear with a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area (R1) supporting a toe and ball portion of the wearer's foot, a midfoot area supporting an arch portion of the wearer's foot, and a rearfoot area supporting a heel portion of the wearer's foot; the forefoot area (R1), midfoot area, and rearfoot area are arranged to be continuous along a front-to-back direction of the footwear; the forefoot area (R1) has a medial forefoot area (A) and a lateral forefoot area (B) defined by a shoe center (SC) of the footwear when viewed along a direction perpendicular to the ground-contacting surface; the midfoot area has a medial midfoot area (C) and a lateral midfoot area (D) defined by the shoe center (SC) of the footwear.when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area has a medial rearfoot area (E) and a lateral rearfoot area (F) defined by the shoe center (SC) of the footwear, when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section (SA) formed from a three-dimensional mesh structure body (2A) in which several unit structures (3A) are repeatedly arranged to be adjacent to each other, the cushioning section (SA) being located across the medial forefoot area (A), the lateral forefoot area (B), the medial midfoot area (C), the lateral midfoot area (D), the medial rearfoot area (E) and the lateral rearfoot area (F), an intake volume ratio of the cushioning section (SA) in a section located in the medial forefoot area (A),is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral forefoot area (B), an intake volume ratio of the cushioning section (SA) in a section located in the medial midfoot area (C) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral midfoot area (D), an intake volume ratio of the cushioning section (SA) in a section located in the medial hindfoot area (E) is greater than an intake volume ratio of the cushioning section (SA) in a section located in the lateral hindfoot area (F), the intake volume ratio of the cushioning section (SA) in the section located in the medial forefoot area (A) is equal to or greater than the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C),the intake volume ratio of the cushioning section (SA) in the section located in the lateral forefoot area (B) is equal to or greater than the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D), the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C) is greater than the intake volume ratio of the cushioning section (SA) in the section located in the medial hindfoot area (E), and the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D) is greater than the intake volume ratio of the cushioning section (SA) in the section located in the lateral hindfoot area (F). Footwear with a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area (R1) supporting a toe and ball portion of the wearer's foot, a midfoot area supporting an arch portion of the wearer's foot, and a rearfoot area supporting a heel portion of the wearer's foot; the forefoot area (R1), midfoot area, and rearfoot area are arranged to be continuous along a front-to-back direction of the footwear; the forefoot area (R1) has a medial forefoot area (A) and a lateral forefoot area (B) defined by a shoe center (SC) of the footwear when viewed along a direction perpendicular to the ground-contacting surface; the midfoot area has a medial midfoot area (C) and a lateral midfoot area (D) defined by the shoe center (SC) of the footwear.when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area has a medial rearfoot area (E) and a lateral rearfoot area (F) defined by the shoe center (SC) of the footwear, when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section (SA) formed from a three-dimensional mesh structure body (2A) in which several unit structures (3A) are repeatedly arranged to be adjacent to each other, the cushioning section (SA) being located across the medial forefoot area (A), the lateral forefoot area (B), the medial midfoot area (C), the lateral midfoot area (D), the medial rearfoot area (E) and the lateral rearfoot area (F), an intake volume ratio of the cushioning section (SA) in a section located in the medial forefoot area (A),is smaller than an intake volume ratio of the cushioning section (SA) in a section located in the lateral forefoot area (B), an intake volume ratio of the cushioning section (SA) in a section located in the medial midfoot area (C), is smaller than an intake volume ratio of the cushioning section (SA) in a section located in the lateral midfoot area (D), an intake volume ratio of the cushioning section (SA) in a section located in the medial hindfoot area (E), is smaller than an intake volume ratio of the cushioning section (SA) in a section located in the lateral hindfoot area (F), the intake volume ratio of the cushioning section (SA) in the section located in the medial forefoot area (A), is smaller than the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C),the intake volume ratio of the cushioning section (SA) in the section located in the lateral forefoot area (B) is less than the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D), the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C) is equal to or less than the intake volume ratio of the cushioning section (SA) in the section located in the medial hindfoot area (E), and the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D) is equal to or less than the intake volume ratio of the cushioning section (SA) in the section located in the lateral hindfoot area (F). Footwear (1A) with a footbed that supports the sole of a wearer's foot and has a ground-contacting surface, wherein the footbed has a forefoot area (R1) that supports a toe section and a ball section of the wearer's foot, a midfoot area that supports an arch section of the wearer's foot, and a rearfoot area that supports a heel section of the wearer's foot, the forefoot area (R1), the midfoot area, and the rearfoot area are arranged to be continuous along a front-to-back direction of the footwear, the forefoot area (R1) has a medial forefoot area (A) and a lateral forefoot area (B) that are defined by a shoe center (SC) of the footwear when viewed along a direction perpendicular to the ground-contacting surface, the midfoot area has a medial midfoot area (C) and a lateral midfoot area (D) that are defined by the shoe center (SC) of the footwear.when viewed along the direction perpendicular to the ground-contacting surface, the rearfoot area has a medial rearfoot area (E) and a lateral rearfoot area (F) defined by the shoe center (SC) of the footwear, when viewed along the direction perpendicular to the ground-contacting surface, the footbed has a cushioning section (SA) formed from a three-dimensional mesh structure body (2A) in which several unit structures (3A) are repeatedly arranged to be adjacent to each other, the cushioning section (SA) being located across the medial forefoot area (A), the lateral forefoot area (B), the medial midfoot area (C), the lateral midfoot area (D), the medial rearfoot area (E) and the lateral rearfoot area (F), an intake volume ratio of the cushioning section (SA) in a section located in the medial forefoot area (A),is smaller than an intake volume ratio of the cushioning section (SA) in a section located in the lateral forefoot area (B), an intake volume ratio of the cushioning section (SA) in a section located in the medial midfoot area (C) is smaller than an intake volume ratio of the cushioning section (SA) in a section located in the lateral midfoot area (D), an intake volume ratio of the cushioning section (SA) in a section located in the medial hindfoot area (E) is smaller than an intake volume ratio of the cushioning section (SA) in a section located in the lateral hindfoot area (F), the intake volume ratio of the cushioning section (SA) in the section located in the medial forefoot area (A) is equal to or greater than the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C),the intake volume ratio of the cushioning section (SA) in the section located in the lateral forefoot area (B) is equal to or greater than the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D), the intake volume ratio of the cushioning section (SA) in the section located in the medial midfoot area (C) is greater than the intake volume ratio of the cushioning section (SA) in the section located in the medial hindfoot area (E), and the intake volume ratio of the cushioning section (SA) in the section located in the lateral midfoot area (D) is greater than the intake volume ratio of the cushioning section (SA) in the section located in the lateral hindfoot area (F). Footwear (1A) according to one of claims 1 to 4, wherein the three-dimensional net structure body (2A) has a three-dimensional lattice structure. Footwear (1A) according to one of claims 1 to 4, wherein the three-dimensional mesh structure body (2A) has a three-dimensional wall structure formed by a wall, and the outer shape of the wall is defined by a pair of flat or curved surfaces that are parallel to each other. Footwear (1A) according to claim 6, wherein the three-dimensional wall structure has a structure based on a triple periodic minimum surface as a reference surface, wherein a thickness is added to the reference surface. Footwear (1A) according to claim 6, wherein the three-dimensional wall structure has a structure based on, as a reference surface, several levels arranged to intersect each other and to have a cavity within it, wherein a thickness is added to the reference surface. Footwear (1A) according to one of claims 1 to 4, wherein the damping section (SA) is formed from a single object that is shaped by three-dimensional additive manufacturing. Footwear (1A) according to one of claims 1 to 4, wherein the footbed has a sole (11) and the sole (11) has the cushioning section (SA). Footwear (1A) according to one of claims 1 to 4, wherein the footbed has a sole (11) and an insole (20A), and the insole (20A) has the cushioning section (SA).

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