Shoe

Abstract

The present disclosure provides a shoe which is suitable for a workout (for example, running) and which adopts a measure against hallux valgus. A shoe 1 comprises a sole and an upper 2 which is provided above the sole and which holds a foot of a wearer, wherein: an upper forefoot region 20F of the upper 2 which covers at least a forefoot portion of the wearer is formed from a single continuous knitted fabric or woven fabric; the upper forefoot region 20F has a first region 25 which corresponds to an inner-foot-side side surface of the wearer that includes the base of a hallux, a second region 26 which corresponds to a fore edge portion of the upper 2, and a third region 27 which is located at least between the toe side of the first region 25 and the second region 26; the stretchability of the first region 25 is higher than that of the second region 26; and the stretchability of the third region 27 is lower than that of the second region 26.

Description

Shoes

[0001] The present disclosure relates to shoes.

[0002] Hallux valgus is a condition in which the base of the big toe (MP joint) protrudes and the tip bends toward the little toe, and is found in approximately 30% of adults. When people with hallux valgus wear shoes, the base of the big toe is pressed down by the upper of the shoe, which can cause pain.

[0003] Various shoes for people with hallux valgus have been proposed. For example, Patent Document 1 proposes an orthopedic shoe intended for wear by people suffering from hallux valgus and other conditions. This shoe has an upper formed with a relief area for the deformation area of ​​the toe. This relief area is made of a material that is more elastic and has a lower friction coefficient than the other upper materials, and is configured to be stretchable.

[0004] EP1800555A1

[0005] The shoes disclosed in the above-mentioned Patent Document 1 have an extended relief area to alleviate stress on the base of the big toe when the base of the big toe protrudes due to hallux valgus.

[0006] The shoe disclosed in the aforementioned Patent Document 1 has the relief region of the upper constructed of different materials from other regions. However, in shoes suitable for sports (e.g., running), the upper is usually constructed of the same material and is required to be breathable. The shoe described above has uppers constructed of different materials and does not take breathability into consideration at all, so it cannot fulfill the functions required of shoes suitable for sports (e.g., running).

[0007] As mentioned above, conventional shoes worn by people with hallux valgus are not suitable for exercise (e.g., running), and there is a demand for shoes that people with hallux valgus can wear comfortably and use when exercising.

[0008] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide shoes suitable for exercise (e.g., running) that take measures against hallux valgus.

[0009] The inventors have studied the stress caused by the base of the big toe protruding due to hallux valgus while satisfying the demands of exercise (for example, running). As a result of extensive research, the inventors have come up with the following configuration.

[0010] A shoe according to one embodiment of the present disclosure comprises a sole and an upper provided above the sole and configured to accommodate a wearer's foot, wherein the forefoot region of the upper covering at least the forefoot of the wearer is formed from a single continuous piece of knitted or woven fabric, and the forefoot region has a first region corresponding to the medial side of the foot including the base of the wearer's big toe, a second region corresponding to the front end of the upper, and a third region located at least between the toe side of the first region and the second region, and the first region has higher elasticity than the second region and the third region has lower elasticity than the second region.

[0011] In the following description, numerous specific examples are set forth to provide a thorough understanding of the present disclosure. However, it will be apparent to one skilled in the art that the present invention may be practiced without these specific examples.

[0012] Accordingly, the following disclosure is to be considered as illustrative of the present disclosure and is not intended to limit the present disclosure to the specific embodiments illustrated by the following drawings or description.

[0013] According to one embodiment of the present disclosure, the forefoot region of the upper covering at least the wearer's forefoot is formed from a single continuous knit or woven fabric, and the first region corresponding to the medial side of the foot, including the base of the wearer's big toe, is configured to be more stretchable than the other regions, allowing the first region corresponding to the protruding part of the base of the big toe to deform outward. This reduces pressure on the base of the wearer's big toe, alleviating stress and reducing discomfort such as pain for people with hallux valgus. Furthermore, because the forefoot region is formed from a single continuous knit fabric, it can be worn comfortably as a shoe for exercise (e.g., running).

[0014] FIG. 1 is a plan view schematically illustrating a state in which a skeletal model of a foot is superimposed on a shoe according to a first embodiment of the present disclosure. FIG. 2 is a development view showing an upper body of the shoe according to the first embodiment of the present disclosure. FIG. 3 is a top view of the shoe according to the first embodiment of the present disclosure. FIG. 4 is a side view of the lateral side of the shoe according to the first embodiment of the present disclosure. FIG. 5 is a side view of the medial side of the shoe according to the first embodiment of the present disclosure. FIG. 6 is a plan view of the medial side of the fore end of the shoe according to the first embodiment of the present disclosure. FIG. 7 is a top view of the shoe according to the first embodiment of the present disclosure worn by a wearer with hallux valgus. FIG. 8 is a plan view schematically illustrating a state in which a skeletal model of a foot with hallux valgus is superimposed on the shoe according to the first embodiment of the present disclosure. FIG. 9 is a development view showing an upper body of a shoe according to a variation of the first embodiment of the present disclosure.

[0015] Next, a specific description will be given based on shoes according to embodiments of the present disclosure. Note that shoes according to the present disclosure are not limited to those shown in the following embodiments, and can be implemented with appropriate modifications within the scope of the gist of the present disclosure. In the embodiments and modified examples of the present disclosure, identical or equivalent components and members are given the same reference numerals, and redundant explanations will be omitted as appropriate. Furthermore, the dimensions of the members in each drawing are shown enlarged or reduced as appropriate for ease of understanding. Furthermore, some members that are not important for explaining the embodiments in each drawing are omitted.

[0016] Furthermore, terms including ordinal numbers such as first and second are used to describe various components, but these terms are used only to distinguish one component from another and do not limit the components.

[0017] [Embodiments] Fig. 1 is a plan view schematically illustrating a state in which a foot skeletal model is superimposed on a shoe 1 according to a first embodiment of the present disclosure. Fig. 2 is a development view illustrating an upper body 20 of the shoe 1 according to the first embodiment of the present disclosure. Fig. 3 is a top view of the shoe 1 according to the first embodiment of the present disclosure. Fig. 4 is a side view of the lateral side of the shoe 1 according to the first embodiment of the present disclosure. Fig. 5 is a side view of the medial side of the shoe 1 according to the first embodiment of the present disclosure. Each of the figures, including Fig. 1, illustrates only the shoe 1 for the left foot. Because the shoe 1 for the left foot and the shoe 1 for the right foot have a symmetrical structure, this embodiment will describe the shoe 1 for the left foot, and will omit a description of the shoe 1 for the right foot. In the following description, the direction in which a shoe center axis C, which is a perpendicular line passing through the center of the shoe 1 when viewed in a plan view, extends is referred to as the front-to-rear direction, and the direction perpendicular to the front-to-rear direction when viewed in a plan view of the shoe 1 is referred to as the foot width direction.

[0018] In addition, in the front-to-back direction, the direction from the heel to the toe of the shoe 1 is referred to as the front, and in the front-to-back direction, the direction from the toe to the heel of the shoe 1 is referred to as the rear. In the up-down direction, when the shoe 1 is placed on a flat surface such as the ground, the direction toward the ground is referred to as the down, and the direction opposite the ground is referred to as the up.

[0019] The medial side of the foot in the anatomical orthogonal position is called the medial side, and the opposite side of the foot from the medial side in the anatomical orthogonal position is called the lateral side. In other words, the side closest to the midline in the anatomical orthogonal position is called the medial side, and the side furthest from the midline in the anatomical orthogonal position is called the lateral side.

[0020] As shown in Figure 1, the human foot is mainly composed of the cuneiform bone (Ba), cuboid bone (Bb), navicular bone (Bc), talus (Bd), calcaneus (Be), metatarsal bone (Bf), proximal phalangeal bone (Bg), middle phalangeal bone (Bh), and distal phalangeal bone (Bi). The joints of the foot include the distal interphalangeal joint (DIP joint) (Ja), the proximal interphalangeal joint (PIP joint) (Jb), the metatarsophalangeal joint (MP joint) (Jc), the Lisfranc joint (Jd), and the Chopart joint (Je).

[0021] The human foot is divided into the forefoot LF, midfoot LM, and hindfoot LR by the Lisfranc joint Jd and Chopart joint Je. The forefoot LF refers to the part of the foot located forward of the Lisfranc joint Jd. The midfoot LM refers to the part between the Lisfranc joint Jd and the Chopart joint Je. The hindfoot LR refers to the part of the foot located backward of the Chopart joint Je.

[0022] 1 and 2, the upper 2 includes an upper forefoot region 20F that covers the forefoot LF of a wearer with a standard build, an upper midfoot region 20M that covers the midfoot LM of a wearer with a standard build, and an upper rearfoot region 20R that covers the rearfoot LR of a wearer with a standard build. The upper forefoot region 20F, the upper midfoot region 20M, and the upper rearfoot region 20R are connected in this order in the front-to-rear direction of the upper 2.

[0023] A line extending in the foot width direction and passing through a position roughly aligned with the Lisfranc joint Jd of a wearer with a standard build is defined as a first boundary line S1, and a line extending in the foot width direction and passing through a position roughly aligned with the Chopart joint Je of a wearer with a standard build is defined as a second boundary line S2. The upper forefoot region 20F is a portion located forward of the first boundary line S1. The upper midfoot region 20M is a portion located between the first boundary line S1 and the second boundary line S2. The upper rearfoot region 20R is a portion located rearward of the second boundary line S2.

[0024] The shoe 1 according to the first embodiment will be described with reference to FIGS.

[0025] The shoe 1 is suitable for exercise such as running, and is used as a running shoe or other sports shoe. The shoe 1 includes a sole 3 and an upper 2 provided above the sole 3 and configured to accommodate the wearer's foot.

[0026] The upper 2 includes an upper body 20, a tongue 21, and a shoelace 22.

[0027] The upper body 20 covers the instep side of the foot. An opening 20a for inserting the wearer's foot and an opening 20b that communicates with the opening 20a are formed at the top of the upper body 20. The opening 20b is closed by a tongue 21. Eyelets 20c (20c1) that are spaced apart in the front-to-rear direction are provided on both side edges of the opening 20b in the width direction of the foot.

[0028] The configuration of the eyelet portion 20c (20c1) is not particularly limited as long as it is possible to pass the shoelace 22 through it, but in the present embodiment 1, it is a through-hole that passes through the upper body 20 in the vertical direction.

[0029] The tongue 21 is a member for protecting the instep of the wearer. The tongue 21 covers the opening 20b inside the upper body 20. The tongue 21 is fixed to the upper body 20 by sewing, welding, adhesion, or a combination thereof.

[0030] The upper body 20 and the tongue 21 may be made of a material such as a knitted fabric in which threads are rolled into a chain shape and the chain-shaped portions are hooked together to form a cloth, a woven fabric in which warp threads and weft threads are crossed at a certain angle to form a cloth, or a braided fabric in which three or more braided threads are crossed and run diagonally to form a cloth. In particular, for shoes 1 that require breathability and lightness, a knitted fabric in which polyester threads are woven is used for the upper body 20 and the tongue 21. Note that the materials for the upper body 20 and the tongue 21 are not limited to the materials exemplified above.

[0031] The shoelace 22 is a string-like member that is threaded alternately through eyelets 20c provided on the side edge of the opening 20b on the medial side 200 in the foot width direction and the side edge of the opening 20b on the lateral side 210 in the foot width direction. The shoelace 22 is detachably attached to the upper body 20.

[0032] In the first embodiment, the upper 2 includes the tongue 21 and the shoelaces 22, but the upper 2 may have a monosock structure in which the portion corresponding to the tongue 21 is integrated with the ankle portion of the upper body 20. Alternatively, the upper body 20 may have a structure in which a hook-and-loop fastener is used instead of the shoelaces 22 to fit the upper body 20 closely to the foot. When the hook-and-loop fastener is used to fit the upper body 20 closely to the foot, the upper body 20 does not have the eyelet portion 20c formed thereon.

[0033] The sole 3 is located below the upper 2. The sole 3 covers the sole of the foot. The sole 3 includes an outsole 30 and a midsole 31. The sole 3 is fixed to the upper body 20 by stitching, welding, adhesion, or a combination of these. The lower surface of the outsole 30 forms a contact surface 30a that is placed on the ground. The midsole 31 is located on the upper surface of the outsole 30 and has cushioning properties. The outsole 30 may be integrated with the midsole 31. The outsole 30 integrated with the midsole 31 is also called a "unisole."

[0034] In the first embodiment, as shown in Fig. 5, the medial side 200 of the midsole 31 of the sole 3 includes a first support portion 31a and a second support portion 32a, which is the region of the midsole 31 other than the first support portion 31a. The first support portion 31a supports at least the midfoot portion LM of the medial side 200 of the wearer. The hardness of the first support portion 31a is configured to be higher than the hardness of the second support portion 32a. By setting the respective hardnesses in this manner, the midfoot portion LM of the medial side 200 of the wearer is prevented from collapsing toward the medial side.

[0035] The configuration of the upper forefoot region 20F of the upper body 20 will be described in detail with reference to Figures 2 to 5. As shown in the developed view of Figure 2, the upper body 20 of this embodiment 1 is composed of an upper forefoot region 20F, an upper midfoot region 20M, and an upper rearfoot region 20R, which are connected in this order in the front-to-rear direction of the upper 2. The upper body 20 is formed from a single continuous piece of knitted or woven fabric. In this embodiment 1, the upper body 20 is formed from a single piece of knitted fabric, for example, mesh fabric, ensuring breathability and lightness.

[0036] The upper forefoot region 20F, which covers the wearer's forefoot LF, has a first region 25 corresponding to the side of the medial side 200 of the foot, including the MP joint Jc, which is the base of the big toe B1 (distal phalanx Bi, proximal phalanx Bg) (see Figure 1), a second region 26 corresponding to the front end 20d of the upper body 20, and a third region 27 located at least between the toe side of the first region 25 and the second region 26.

[0037] In the first embodiment, the upper forefoot region 20F has a fifth region 28 that includes the shoe center axis C of the upper forefoot region 20F and is located between the front end of the opening 20b and the toe guard 24, and a sixth region 29 that is located on the outer side 210 of the foot from the fifth region 28. Regions having the same configuration as the third region 27 are located between the second region 26 and the fifth region 28 and between the fifth region 28 and the sixth region 29.

[0038] In the first embodiment, the first region 25, the second region 26, the fifth region 28, and the sixth region 29 are hatched for ease of understanding.

[0039] 2 and 5, the first region 25 is formed in a region covering the side surface of the medial side 200 of the foot corresponding to the position from the anterior end to the upper part of the posterior end of the ball of the big toe, with the part corresponding to the MP joint at the base of the big toe B1 (see FIG. 1) as its center. The first region 25 in the first embodiment is formed so that it is wide on the sole 3 side and narrows in the front-to-back direction from the sole 3 upward. In other words, it is formed in a mountain shape extending upward from the sole 3, with the position corresponding to the MP joint as its apex.

[0040] In this embodiment 1, the first region 25 is formed in a mountain shape, but is not limited to this shape and may be an oval shape, a rectangular shape, or the like, as long as it is a shape that covers the area including the MP joint, which is the base of the big toe B1 (see Figure 1).

[0041] In the first embodiment, the stretchability of the first region 25, the second region 26, and the third region 27 is set as follows: The stretchability of the first region 25 is higher than that of the second region 26, and the stretchability of the third region 27 is lower than that of the second region 26. That is, the stretchability of the first region 25 is the highest, and the stretchability of the second region 26 is set next higher than that of the third region 27, and the stretchability of the third region 27 is the lowest.

[0042] The fifth region 28 and the sixth region 29 are configured to have the same stretchability as the second region 26. The second region 26, the fifth region 28, and the sixth region 29 extend in the width direction of the foot and are configured to fit the wearer's foot. Furthermore, the second region 26, the fifth region 28, and the sixth region 29 are configured to have good breathability.

[0043] In this embodiment 1, the upper midfoot region 20M and the upper rearfoot region 20R are configured with the same elasticity as the third region 27, but the elasticity of the upper midfoot region 20M and the upper rearfoot region 20R is not particularly limited.

[0044] In the present embodiment 1, the upper body 20 is made of a knitted mesh fabric. The mesh fabric used has a larger mesh size in the first region 25 than in the second region 26, and a smaller mesh size in the third region 27 than in the second region 26.

[0045] By configuring the upper forefoot region 20F of the upper body 20 (upper 2) from a single continuous piece of mesh fabric, it is possible to ensure breathability in the upper forefoot region 20F. Furthermore, by controlling the mesh opening of the mesh fabric, it is possible to make the first region 25, which corresponds to the side of the medial side 200 of the foot including the base of the wearer's big toe B1 (MP joint), more stretchable than the other regions.

[0046] As described above, the upper forefoot region 20F of the upper body 20 (upper 2), which covers at least the wearer's forefoot LF, is formed from a single continuous knit fabric. The first region 25, which corresponds to the medial side of the foot and includes the base of the wearer's big toe B1 (MP joint), is configured to be more stretchable than the other regions. As shown in FIG. 8 , hallux valgus is a condition in which the base of the big toe B1 (MP joint) protrudes and its tip bends toward the little toe. As shown in FIG. 7 , when a person with hallux valgus wears the shoe 1, the base of the big toe B1 (MP joint) abuts against the first region 25 of the upper body 20 of the shoe 1. In the shoe 1 of the first embodiment, the first region 25, which corresponds to the protruding portion of the base of the big toe B1, deforms outward. This relieves stress on the base of the big toe B1 and reduces discomfort caused by pain in people with hallux valgus. Furthermore, since the upper forefoot region 20F is formed from a single continuous piece of knitted fabric, it is possible to obtain a comfortable fit as a shoe for exercise (for example, running).

[0047] In this embodiment 1, the first medial foot side eyelet portion 20c1, which is located at the frontmost position in the foot length direction of the medial foot side edge of the eyelet portion 20c, is configured to be located rearward in the foot length direction from the portion of the first region 25 corresponding to the base of the big toe B1 (MP joint).

[0048] The first medial eyelet portion 20c1, which is located at the forefront, is located rearward in the foot length direction from the base of the big toe in the first region 25, so that even when the shoelace 22 is tightened, stress on the big toe can be suppressed.

[0049] In the first embodiment, as shown in Figure 2, the opening 20b further has a front lace-threading portion 20e at the center of the front end, which is positioned forward in the foot length direction relative to the first medial eyelet portion 20c1. With this configuration, when the shoelace 22 is tightened, the force that pulls the portion of the upper 2 corresponding to the big toe B1 inward in the foot width direction is distributed by the first medial eyelet portion 20c1 and the front lace-threading portion 20e, thereby reducing stress on the big toe.

[0050] 6, the upper 2 has an inner surface 20j facing the wearer's foot and an outer surface 20h exposed to the outside. Reinforcement members 20k are provided at an inner front end 20n of a forefoot region 20F of the inner surface 20j, extending from the center in the foot width direction to the medial and lateral sides of the foot.

[0051] By providing the reinforcing member 20k, damage to the upper 2 caused by the toe of the big toe thrusting upward can be suppressed.

[0052] Furthermore, the reinforcing member 20k is provided with a protruding portion 20m that protrudes rearward in the foot length direction from the center in the foot width direction.

[0053] By receiving the tip of the big toe of a person with hallux valgus, which is tilted toward the center in the width direction of the foot, by the protrusion 20m, damage to the upper 2 can be further suppressed.

[0054] [Modification] Fig. 9 shows a modification of the present disclosure. In this modification, a fourth region 40 having lower elasticity than the third region 27 is provided on the side of the third region 27 adjacent to the first region 25. For ease of understanding, the fourth region 40 is painted black in Fig. 7.

[0055] By providing a fourth region 40 having lower elasticity than the third region 27 on the side of the third region 27 adjacent to the first region 25, the ability to hold the wearer's feet can be improved.

[0056] Similarly, fourth regions 40 having lower elasticity than the third region 27 are provided between the third region 27 and the fifth region 28, between the fifth region 28 and the sixth region 29, and between the third region 27, the fifth region 28, the sixth region 29 and the toes.

[0057] [Variation 2] In the above-described embodiment, the upper body 20 uses a mesh fabric, but the present disclosure is not limited to this. The upper body 20 (upper 2) may use a fabric having an inner surface facing the wearer's foot and an outer surface exposed to the outside. At least the first region 25 and the second region 26 are provided with a plurality of recesses recessed from the outer surface 20h toward the inner surface 20j. The total area of ​​the plurality of recesses provided in the first region 25 may be greater than the total area of ​​the plurality of recesses provided in the second region 26.

[0058] In this way, by configuring the total area of ​​the multiple recesses provided in the first region 25 to be larger than the total area of ​​the multiple recesses provided in the second region 26, the first region 25, which corresponds to the side of the medial side 200 of the foot including the base of the wearer's big toe B1 (MP joint), can be made more elastic than the other regions.

[0059] In the above-described embodiment, the upper forefoot region 20F is positioned forward of the Lisfranc joint Jd, but the upper forefoot region 20F is not limited to this and may be positioned forward in the foot width direction along the upper part of the rear end of the ball of the big toe. In other words, the upper forefoot region 20F only needs to include a region corresponding to the medial lateral surface of the wearer's foot, including the base of the big toe B1.

[0060] The above-described modifications have the same functions and effects as the above-described embodiment.

[0061] Any combination of the above-described embodiments and modifications is also useful as an embodiment of the present invention. A new embodiment resulting from the combination has the combined effects of each of the combined embodiments and modifications.

[0062] The present disclosure can be used in athletic shoes such as running shoes.

[0063] The present specification discloses the following: (1) A shoe comprising a sole and an upper configured to accommodate a foot disposed above the sole, wherein a forefoot region of the upper covering at least a wearer's forefoot is formed from a single continuous piece of knitted or woven fabric, the forefoot region having a first region corresponding to the medial side of the foot including the base of the wearer's big toe, a second region corresponding to the front end of the upper, and a third region located at least between the toe side of the first region and the second region, the first region having higher stretchability than the second region and the third region having lower stretchability than the second region. (2) The shoe described in (1) above, wherein the knitted fabric is a mesh fabric, and the opening in the first region is larger than the opening in the second region and the opening in the third region is smaller than the opening in the second region. (3) The shoe described in (1) or (2) above, further comprising a fourth region on the third region adjacent to the first region, the fourth region having lower stretchability than the third region. (4) The shoe according to any one of (1) to (3) above, wherein the upper further comprises an opening into which the wearer's foot is inserted, an opening connected to the front of the opening and closed by a tongue, and a plurality of eyelets located at the medial and lateral edges of the opening and spaced apart in the foot length direction, and a first medial eyelet located at the foremost position in the foot length direction on the medial edge of the eyelet is located posterior in the foot length direction from a position corresponding to the base of the first area. (5) The shoe according to (4) above, further comprising a front lacing portion at the center of the front end of the opening, and wherein the front lacing portion is located forward in the foot length direction from the position of the first medial eyelet. (6) A shoe described in any of (1) to (5) above, wherein the upper has an inner surface facing the wearer's foot and an outer surface exposed to the outside, and at least the first region and the second region are provided with a plurality of recesses recessed from the outer surface toward the inner surface, and the total area of ​​the plurality of recesses provided in the first region is greater than the total area of ​​the plurality of recesses provided in the second region.(7) The shoe according to any one of (1) to (6) above, wherein the upper has an inner surface facing the wearer's foot and an outer surface exposed to the outside, and has a reinforcing member extending to the medial side and the lateral side of the foot, including the center in the foot width direction of the fore end of the forefoot region of the inner surface of the upper. (8) The shoe according to (7) above, wherein the reinforcing member has a protrusion that protrudes rearward in the foot length direction from the center in the foot width direction. (9) The shoe according to any one of (1) to (8) above, wherein the sole comprises a first support portion that supports at least the wearer's midfoot on the medial side, and a second support portion that is a region of the sole other than the first support portion, and the hardness of the first support portion is higher than the hardness of the second support portion.

[0064] 1: Shoes 2: Upper 3: Sole 20: Upper body 20F: Upper forefoot region (forefoot region) 20M: Upper midfoot region (midfoot region) 20R: Upper rear foot region (rearfoot region) 20a: Opening 20b: Opening 20c: Eyelet portion 20c1: First medial eyelet portion 20d: Front end 20e: Front end lace-through portion 21: Tongue 22: Shoelace 25: First region 26: Second region 27: Third region 28: Fifth region 29: Sixth region 30: Outsole 30a: Ground contact surface 31: Midsole 40: Fourth region 200: Medial side 210: Lateral side B1: Great toe Jc: MP joint LF: Forefoot LM: Midfoot LR: Rearfoot

Claims

1. A shoe comprising a sole and an upper provided above the sole and configured to accommodate a wearer's foot, wherein a forefoot region of the upper covering at least the forefoot of the wearer is formed from a continuous piece of knitted or woven fabric, and the forefoot region has a first region corresponding to the medial side of the foot including the base of the wearer's big toe, a second region corresponding to the front end of the upper, and a third region located at least between the toe side of the first region and the second region, and the first region has a higher elasticity than the second region and the third region has a lower elasticity than the second region.

2. The shoe according to claim 1, wherein the knitted fabric is a mesh fabric, the opening of the first region is larger than the opening of the second region, and the opening of the third region is smaller than the opening of the second region.

3. The shoe according to claim 1, further comprising a fourth region on the side of said third region adjacent to said first region, said fourth region having lower elasticity than said third region.

4. The shoe as described in claim 1, wherein the upper further has an opening into which the wearer's foot is inserted, an opening connected to the front of the opening and closed by a tongue, and a plurality of eyelets located at the medial foot side edge and the lateral foot side edge of the opening and spaced apart in the foot length direction, and wherein a first medial foot side eyelet located at the foremost part in the foot length direction on the medial foot side edge among the eyelets is located posterior in the foot length direction from a portion of the first region corresponding to the base of the first toe.

5. The shoe as described in claim 4, further comprising a front end lacing portion at the center of the front end of the opening, the front end lacing portion being positioned forward in the foot length direction relative to the position of the first inner foot side eyelet portion.

6. The shoe according to claim 1, wherein the upper has an inner surface facing the wearer's foot and an outer surface exposed to the outside, at least the first region and the second region are provided with a plurality of recesses recessed from the outer surface toward the inner surface, and the total area of ​​the plurality of recesses provided in the first region is greater than the total area of ​​the plurality of recesses provided in the second region.

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