Shoulder straps and bags

Abstract

To provide a shoulder strap that adequately distributes pressure on the shoulder, and a bag equipped with such a strap. [Solution] The shoulder strap 3 comprises an outer fabric 31 having a width direction WD with an outer fabric 31a and an inner fabric 31b, and an outer and inner side facing each other; a core material 32 housed in the outer fabric 31 and extending along the width direction WD of the outer fabric 31 with an outer and inner side facing each other; and a bead cushion 33 housed in the outer fabric 31 and positioned on the opposite side of the core material 32 from the outer fabric 31a. The inner fabric 31b has higher elasticity than the outer fabric 31a. The core material 32 is longer than the outer fabric 31a in the width direction WD of the outer fabric 31. The inner fabric 31b covers the outer fabric 31a, the core material 32 and the bead cushion 33 on the inside of the outer fabric 31.

Description

Technical Field

[0006] , , ,

[0007] ,

[0001] The present invention relates to a shoulder belt and a bag.

Background Art

[0002] In a shoulder belt of a normal schoolbag, a urethane cushion is used as a cushioning material. Since the urethane cushion has no fluidity, it is difficult for the urethane cushion to follow the unevenness of the shoulder. Therefore, pressure is partially applied from the shoulder belt to the user's shoulder. As a result, pain is likely to occur in the user's shoulder.

[0003] A bead cushion has higher fluidity than a urethane cushion. Therefore, when a bead cushion is used as a cushioning material, the bead cushion follows the unevenness of the shoulder, increasing the contact area between the bead cushion and the shoulder, thereby enabling the dispersion of pressure to the shoulder.

[0004] Utility Model Registration No. 3108850 (Patent Document 1) describes a backpack and a shoulder bag provided with a shoulder belt having a cushioning body for a bag incorporated therein, in which a large number of powdery cushioning materials made of synthetic resin foam are filled in a flexible bag body.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] ] However, simply changing the cushioning material of a normal shoulder belt to a bead cushion does not sufficiently exhibit the fluidity of the bead cushion because the stretchability of the exterior fabric used for the shoulder belt is insufficient. Therefore, the dispersion of pressure to the shoulder becomes insufficient.

[0007] The present invention has been made in view of the above problems, and its purpose is to provide a shoulder strap that sufficiently distributes pressure on the shoulder and a bag equipped therewith. [Means for solving the problem]

[0008] The shoulder strap of the present invention comprises an outer fabric having a width direction in which the outer and inner sides face each other, an outer fabric and an inner fabric, a core material housed in the outer fabric and extending along the width direction in which the outer and inner sides face each other, and a bead cushion housed in the outer fabric and positioned on the opposite side of the outer fabric from the core material. The inner fabric has higher elasticity than the outer fabric. The core material is longer than the outer fabric in the width direction of the outer fabric. The inner fabric covers the outer fabric, core material and bead cushion on the inside of the outer fabric. [Effects of the Invention]

[0009] According to the shoulder strap of the present invention, the pressure on the shoulder is sufficiently distributed. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic front view showing the configuration of the backpack in Embodiment 1. [Figure 2] This is a schematic side view showing the configuration of the backpack in Embodiment 1. [Figure 3] This is a schematic front view showing the upper belt of the shoulder strap in Embodiment 1. [Figure 4] This is a cross-sectional view along the line IV-IV in Figure 3. [Figure 5] This is a schematic front view showing the bead cushion in Embodiment 1. [Figure 6] This is a cross-sectional view illustrating the configuration of the shoulder strap in the comparative example. [Figure 7] This is a schematic partial cross-sectional view showing the shoulder strap in the comparative example when worn by the user. [Figure 8]It is a partial cross-sectional view schematically showing a state where the shoulder belt in Embodiment 1 is worn by a user. [Figure 9] It is a cross-sectional view schematically showing the configuration of the shoulder belt in Embodiment 2. [Figure 10] It is a perspective view schematically showing the configuration of the shoulder bag in Embodiment 3. [Figure 11] It is a plan view schematically showing the configuration of the shoulder belt in Embodiment 3. [Figure 12] It is a bottom view schematically showing the configuration of the shoulder belt in Embodiment 3.

Embodiments for Carrying out the Invention

[0011] Hereinafter, embodiments of the present invention will be described based on the drawings. In the following, the same or corresponding parts will be denoted by the same reference numerals, and duplicate explanations will not be repeated.

[0012] The bag in the present embodiment is applicable to various backpacks such as schoolbags and rucksacks, as well as shoulder bags such as one-shoulder bags.

[0013] (Embodiment 1) Referring to FIGS. 1 to 5, the configuration of the bag 100 in Embodiment 1 will be described. In Embodiment 1, the bag 100 according to the present embodiment will be described based on a backpack 101 as an example. In the present embodiment, the backpack 101 is a schoolbag.

[0014] As shown in FIGS. 1 and 2, the backpack 101 in the present embodiment mainly includes a storage portion 一, a lid portion 2, a pair of shoulder belts 3, a belt attachment 4, and a connecting member 5. Note that FIG. 2 shows one shoulder belt 3 in order to make it easier to see the shoulder belt 3, and does not show the other shoulder belt 3.

[0015] The storage part 1 has a back part 1a, a bottom part 1b, a front part 1c, and a pair of side parts 1d. The back part 1a is the part facing the user when the user carries the backpack 100 on the back. The bottom part 1b is the part constituting the bottom of the storage part 1. The front part 1c is the part facing the back part 1a. The pair of side parts 1d are the parts arranged on both the left and right sides of each of the back part 1a and the front part 1c.

[0016] The storage part 1 has an opening at the upper end. The storage part 1 has an internal space communicating with the opening. The internal space is a space surrounded by the inner peripheral surfaces of the back part 1a, the bottom part 1b, the front part 1c, and the pair of side parts 1d respectively. The storage part 1 is configured to be able to store textbooks and the like in the internal space through the opening. The lid part 2 is connected to the upper end of the back part 1a of the storage part 1, and is configured to be able to open and close the opening with the upper end of the back part 1a as the base end.

[0017] The shoulder belt 3 is configured to be worn at least on the user's shoulder when the user carries the backpack 101 on the back. The shoulder belt 3 is attached to the storage part 1. The pair of shoulder belts 3 are respectively connected to the back part 1a of the storage part 1 via belt attachments 4. The upper ends of each of the pair of shoulder belts 3 are attached to the belt attachments 4. Also, the pair of shoulder belts 3 are respectively connected to the bottom part 1b of the storage part 1 via connecting members 5. The lower ends of each of the pair of shoulder belts 3 are attached to the connecting members 5.

[0018] Each of the pair of shoulder belts 3 mainly has an upper belt 3a, a lower belt 3b, a buckle 3c, a cover member 3d, and an annular member 3e. A plurality of belt holes 3a1 are provided in the upper belt 3a. The upper end of the upper belt 3a is attached to the belt attachment 4. The lower end of the lower belt 3b is attached to the connecting member 5.

[0019] The upper belt 3a and the lower belt 3b are connected by a buckle 3c. The length of the shoulder strap 3 can be adjusted using the buckle 3c. The buckle 3c has a pin 3c1 and a buckle body 3c2. The buckle 3c is attached to the upper end of the lower belt 3b. The buckle 3c is configured such that the pin 3c1 is locked into the belt hole 3a1 when the upper belt 3a is inserted through the buckle body 3c2.

[0020] The cover member 3d is configured to allow the upper belt 3a to pass through it. The cover member 3d is positioned between the upper belt 3a and the buckle body 3c2 when the upper belt 3a is inserted through it. The annular member 3e is attached to the lower belt 3b. The annular member 3e is configured to allow the upper belt 3a, which is connected to the lower belt 3b by the buckle 3c, to pass through it.

[0021] In the case of a backpack or similar item, the shoulder strap 3 does not necessarily have an upper strap 3a and a lower strap 3b, and may consist of a single, strip-shaped strap.

[0022] The belt attachment 4 is for attaching the shoulder straps 3 to the storage compartment 1. The belt attachment 4 is attached to the storage compartment 1. The belt attachment 4 is attached to the upper end of the back portion 1a of the storage compartment 1. The belt attachment 4 mainly consists of an attachment portion 4a and a pair of connecting bodies 4b.

[0023] The mounting portion 4a is attached to the upper end of the back portion 1a of the storage portion 1. The mounting portion 4a is covered by the outer skin of the back portion 1a. A pair of connecting bodies 4b are attached to the mounting portion 4a. The pair of connecting bodies 4b protrude upward from the mounting portion 4a. The pair of connecting bodies 4b are exposed from the outer skin of the back portion 1a. The pair of connecting bodies 4b may be configured to swing freely in directions facing each other. The upper ends of a pair of shoulder straps 3 are attached to the upper ends of the pair of connecting bodies 4b.

[0024] The connecting member 5, together with the belt attachment 4, is for attaching the shoulder straps 3 to the storage compartment 1. The connecting member 5 is attached to the bottom 1b of the storage compartment 1. The lower ends of the pair of shoulder straps 3 are attached to the connecting member 5.

[0025] The configuration of the shoulder strap 3 in the embodiment will be described in detail with reference to Figures 3 and 4. Figure 3 shows the upper strap 3a of the shoulder strap 3 for the right shoulder.

[0026] The shoulder strap 3 includes an outer fabric 31, a core material 32, and a bead cushion 33. The outer fabric 31, core material 32, and bead cushion 33 only need to be provided on at least the portion of the shoulder strap 3 that contacts the shoulder. The core material 32 is housed in the outer fabric 31. The bead cushion 33 is housed in the outer fabric 31. In other words, the core material 32 and the bead cushion 33 are located inside the outer fabric 31.

[0027] In this embodiment, the shoulder strap 3 is curved so as to protrude outward from the upper end to the lower end, and then curves so as to protrude inward. In other words, the shoulder strap 3 is configured to meander in an S-shape in the width direction of the shoulder strap 3. The outer fabric 31, core material 32, and bead cushion 33 are configured to extend along the shape of the shoulder strap 3.

[0028] The outer fabric 31 includes an outer fabric 31a and an inner fabric 31b. The outer fabric 31 has a width direction WD where the outer and inner sides face each other. The width direction WD of the outer fabric 31 is the short side direction of the outer fabric 31. The length direction of the outer fabric 31 is the longitudinal direction of the outer fabric 31. The width direction WD of the outer fabric 31 is the width direction of the shoulder strap 3. The length direction of the outer fabric 31 is the longitudinal direction of the shoulder strap 3.

[0029] The outer fabric 31a is positioned on the surface of the shoulder strap 3. The outer fabric 31a has a surface 31a1 and a back surface 31a2. The outer fabric 31a has a higher hardness than the back fabric 31b. The material of the outer fabric 31a is, for example, synthetic leather.

[0030] The lining fabric 31b covers the outer fabric 31a, the core material 32, and the bead cushion 33 on the inside of the outer fabric 31. The lining fabric 31b is folded and sewn to the surface 31a1 of the outer fabric 31a on the inside (neck side) of the outer fabric 31 so as to overlap with the surface 31a1 of the outer fabric 31a. The lining fabric 31b is sewn to the back surface 31a2 of the outer fabric 31a on the outside (shoulder side) of the outer fabric 31, sandwiching the core material 32 between them.

[0031] The lining fabric 31b is exposed on the back surface, a pair of sides, and part of the surface of the outer fabric 31. The lining fabric 31b is exposed on the back surface, sides, and part of the surface of the inner (neck side) of the outer fabric 31 in the width direction WD of the outer fabric 31. The lining fabric 31b is located on the outermost side of the back surface, sides, and part of the surface of the inner (neck side) of the outer fabric 31. The lining fabric 31b is exposed on the back surface and sides of the outer (shoulder side) of the outer fabric 31 in the width direction WD of the outer fabric 31, but is not exposed on the surface of the outer (shoulder side) of the outer fabric 31.

[0032] The lining fabric 31b has higher elasticity than the outer fabric 31a. The lining fabric 31b is three-dimensionally stretchable. That is, the lining fabric 31b is stretchable not only in the planar direction (up, down, left, and right) but also in the thickness direction. The lining fabric 31b is made of raschel fabric containing polyamide and polyurethane. The lining fabric 31b is softer than the outer fabric 31a.

[0033] The core material 32 extends along the width direction WD of the outer fabric 31, where the outer and inner sides face each other. The core material 32 is longer than the outer fabric 31a in the width direction WD of the outer fabric 31. The core material 32 is positioned to face the outer fabric 31a. The core material 32 is also positioned to face the bead cushion 33. The core material 32 is constructed in a plate shape. The core material 32 has a surface 32a, a back surface 32b, and a pair of side surfaces 32c. The pair of side surfaces 32c connect the surface 32a and the back surface 32b. The surface 32a of the core material 32 is positioned along the back surface 31a2 of the outer fabric 31a. The back surface 32b of the core material 32 is in contact with the bead cushion 33. The pair of side surfaces 32c of the core material 32 are covered by the back fabric 31b. The material of the core material 32 is, for example, urethane foam.

[0034] The bead cushion 33 is positioned on the opposite side of the outer fabric 31a from the core material 32. The bead cushion 33 protrudes outward from the core material 32 inside the outer fabric 31. The bead cushion 33 includes an outer member 33a and a plurality of beads 33b enclosed in the outer member 33a. The shape of the bead cushion 33 changes as the shape of the outer member 33a changes due to the flow of the plurality of beads 33b inside the bead cushion 33. The bead cushion 33 has a lower hardness than the core material 32. The bead cushion 33 is less resilient than the core material 32.

[0035] On the inside (neck side) of the outer fabric 31, the outer fabric 31a and the inner fabric 31b of the outer fabric 31 are sewn to the shoulder strap 3 in the front-to-back direction with sewing thread 34. On the outside (shoulder side) of the outer fabric 31, the outer fabric 31a, the inner fabric 31b, and the core material 32 of the outer fabric 31 are sewn to the shoulder strap 3 in the front-to-back direction with sewing thread 34.

[0036] Refer to Figure 5 for a more detailed explanation of the configuration of the bead cushion 33. The beanbag cushion 33 includes a first partition P1. The first partition P1 is located on the upper side in the longitudinal direction of the beanbag cushion 33. The first partition P1 is located on one end side in the longitudinal direction of the beanbag cushion 33. The first partition P1 extends in the longitudinal direction of the beanbag cushion 33. The first partition P1 is configured to divide the beanbag cushion 33 into multiple regions. In this embodiment, the first partition P1 is configured to divide the beanbag cushion 33 into two regions in the width direction of the beanbag cushion 33. In this embodiment, the first partition P1 is constructed by sewing the front and back surfaces of the beanbag cushion 33.

[0037] The beanbag cushion 33 includes a second partition P2. The second partition P2 is located on the lower side of the beanbag cushion 33 in the longitudinal direction. The second partition P2 is located on the other end side in the longitudinal direction of the beanbag cushion 33. The second partition P2 extends in the longitudinal direction of the beanbag cushion 33. The second partition P2 is configured to divide the beanbag cushion 33 into multiple regions. In this embodiment, the second partition P2 is configured to divide the beanbag cushion 33 into two regions in the width direction of the beanbag cushion 33. In this embodiment, the second partition P2 is constructed by sewing the front and back surfaces of the beanbag cushion 33.

[0038] In this embodiment, the outer periphery of the outer material 33a of the bead cushion 33 is sewn all the way around. The outer material 33a includes an overhang that extends outward from the sewn portion.

[0039] The bead cushion 33 includes a connecting section C between the first partition section P1 and the second partition section P2. The connecting section C is configured such that beads 33b move through the connecting section C within the bead cushion 33.

[0040] Next, the effects and advantages of this embodiment will be explained in comparison with those of a comparative example. First, the comparative example shoulder strap 3 will be described with reference to Figures 6 and 7. As shown in Figure 6, in the comparative example shoulder strap 3, the lining fabric 31b is exposed on the inner (neck side) and outer (shoulder side) back and side surfaces of the outer fabric 31 in the width direction WD of the outer fabric 31, but is not exposed on the inner (neck side) and outer (shoulder side) surfaces of the outer fabric 31. The material of the lining fabric 31b is synthetic leather.

[0041] Referring to Figure 7, the condition in which the comparative example shoulder belt 3 is worn on the shoulder of user 200 will be explained. For clarity, Figure 7 shows the shoulder belt 3 for the right shoulder and does not show the shoulder belt 3 for the left shoulder. Figure 7 shows a cross-sectional view of the upper belt 3a of the shoulder belt 3. In the comparative example shoulder belt 3, the elasticity of the lining fabric 31b is insufficient, so the volume that can be deformed is small. As a result, the fluidity of the bead cushion 33 is not achieved. In other words, because the beads 33b cannot flow sufficiently, the bead cushion 33 becomes hard. Consequently, the distribution of pressure on the shoulder is insufficient.

[0042] Next, with reference to Figure 8, the state in which the shoulder belt 3 of this embodiment is attached to the shoulder of the user 200 will be described. In order to make the shoulder belt 3 easier to see, Figure 8 shows the shoulder belt 3 for the right shoulder and does not show the shoulder belt 3 for the left shoulder. Figure 8 shows a cross-sectional view of the upper belt 3a of the shoulder belt 3. The shoulder belt 3 in this embodiment is equipped with a bead cushion 33 as a cushioning material. Since the bead cushion 33 has higher fluidity than a urethane cushion, the bead cushion 33 conforms to the contours of the shoulder, increasing the contact area between the bead cushion 33 and the shoulder, thereby distributing the pressure on the shoulder. Therefore, it is possible to suppress the occurrence of shoulder pain caused by localized pressure on the shoulder.

[0043] Furthermore, the lining fabric 31b has higher elasticity than the outer fabric 31a. This ensures the fluidity of the bead cushion 33. In addition, the lining fabric 31b cannot shrink in the curved parts (areas where shrinkage would normally occur), thus suppressing the formation of wrinkles in the lining fabric 31b. Since pressure is more easily applied to areas where wrinkles occur, suppressing the formation of wrinkles allows for better pressure distribution.

[0044] Furthermore, the core material 32 is longer than the outer fabric 31a in the width direction WD of the outer fabric 31. Therefore, the core material 32 can suppress the movement of the bead cushion 33 in the direction of the outer fabric 31a. Consequently, the contact area between the bead cushion 33 and the shoulder can be secured, making it possible to distribute the pressure on the shoulder.

[0045] Based on the above, the shoulder belt 3 in this embodiment provides sufficient distribution of pressure on the shoulders.

[0046] Furthermore, the lining fabric 31b covers the outer fabric 31a, core material 32, and bead cushion 33 on the inside of the outer fabric 31. As a result, there is no edge formed by sewing the outer fabric 31a, core material 32, and lining fabric 31b together with the core material 32 sandwiched between them. Therefore, it is possible to suppress the occurrence of neck pain caused by the edge rubbing against the user's 200 neck.

[0047] Furthermore, the bead cushion 33 protrudes outward from the core material 32 on the inside of the outer fabric 31. Therefore, it is possible to prevent the core material 32 from coming into contact with the user's neck via the lining fabric 31b without going through the bead cushion 33. Thus, it is possible to prevent the occurrence of neck pain caused by the core material 32 coming into contact with the user's neck via the lining fabric 31b.

[0048] In this embodiment, the shoulder strap 3 is stretchable in three dimensions. Therefore, the lining fabric 31b is stretchable not only in the planar direction (up, down, left, and right) but also in the thickness direction. Consequently, the lining fabric 31b can shrink in the thickness direction, which further suppresses the occurrence of wrinkles in the lining fabric 31b.

[0049] In this embodiment, the shoulder strap 3 is made of a Russell fabric containing polyamide and polyurethane. This increases the elasticity of the lining fabric 31b. Therefore, it is possible to further suppress the occurrence of wrinkles in the lining fabric 31b.

[0050] In this embodiment, the bag 100 is equipped with the shoulder strap 3 described above. Therefore, it is possible to provide a bag 100 equipped with a shoulder strap 3 that adequately distributes pressure on the shoulders. In this embodiment, it is possible to provide a backpack bag 101 equipped with a shoulder strap 3 that adequately distributes pressure on the shoulders.

[0051] (Embodiment 2) Embodiment 2 has the same configuration and effects as Embodiment 1 unless otherwise specified. Therefore, the same reference numerals are used for components identical to those in Embodiment 1, and their descriptions are not repeated.

[0052] Referring to Figure 9, the configuration of the shoulder belt 3 in Embodiment 2 will be described. In the shoulder belt 3 of Embodiment 2, the lining fabric 31b covers the outer fabric 31a, core material 32, and bead cushion 33 on the outside (shoulder side) of the outer fabric 31. The lining fabric 31b is sewn to the surface 31a1 and back surface 31a2 of the outer fabric 31a on the outside (shoulder side) of the outer fabric 31, sandwiching the outer fabric 31a which is folded upward. The lining fabric 31b is exposed on the back surface, side surface, and part of the surface on the outside (shoulder side) of the outer fabric 31 in the width direction WD of the outer fabric 31.

[0053] In the shoulder belt 3 of Embodiment 2, the lining fabric 31b is sewn to the outer surface 31a1 and back surface 31a2 of the outer surface fabric 31a on the outside of the outer surface fabric 31, sandwiching the outer surface fabric 31a which is folded upward. Therefore, by positioning the stiffened sewn portion upward, it is possible to suppress the occurrence of neck pain caused by the core material 32 coming into contact with the user's neck via the lining fabric 31b not only on the inside (neck side) but also on the outside (shoulder side) of the outer surface fabric 31 in the width direction WD of the outer surface fabric 31.

[0054] (Embodiment 3) Embodiment 3 has the same configuration and effects as Embodiment 1 unless otherwise specified. Therefore, the same reference numerals are used for components identical to those in Embodiment 1, and the descriptions are not repeated.

[0055] Referring to Figures 10 to 12, the configuration of the bag 100 in Embodiment 3 will be described. In Embodiment 3, the bag 100 according to this embodiment will be described based on a shoulder bag 102 as an example. In this embodiment, the shoulder bag 102 is a one-shoulder bag.

[0056] As shown in Figure 10, in this embodiment, the opening of the storage compartment 1 is configured to be openable and closable with a zipper 1e. In this embodiment, there is one shoulder strap 3. The shoulder strap 3 is made up of a single strip-shaped belt. One end of the shoulder strap 3 is attached to the right side 1d, and the other end of the shoulder strap 3 is attached to the left side 1d.

[0057] The shoulder strap 3 includes a shoulder rest portion 35 and a band portion 36. The shoulder rest portion 35 includes an outer fabric 31, a core material 32, and a bead cushion 33. The shoulder rest portion 35 is positioned in the center of the longitudinal direction of the shoulder strap 3. The band portion 36 is positioned so as to sandwich the shoulder rest portion 35 in the longitudinal direction of the shoulder strap 3. The band portion 36 is configured in a band shape. The right band portion 36 is attached to the right side portion 1d, and the left band portion 36 is attached to the left side portion 1d. The outer fabric 31, core material 32, and bead cushion 33 are not positioned in the band portion 36.

[0058] As shown in Figures 11 and 12, in this embodiment, the lining fabric 31b and the bead cushion 33 protrude from the band portion 36 on the inside (neck side) of the width direction WD of the outer fabric 31.

[0059] The shoulder strap 3 in Embodiment 3 also provides sufficient pressure distribution on the shoulder. Furthermore, it is possible to provide a shoulder bag 102 equipped with a shoulder strap 3 that provides sufficient pressure distribution on the shoulder.

[0060] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than by the foregoing description and is intended to include all modifications in the sense and scope equivalent to the claims. [Explanation of symbols]

[0061] 1 Storage compartment, 2 Lid, 3 Shoulder strap, 4 Belt attachment, 5 Connecting member, 31 Outer fabric, 31a Outer fabric, 31b Lining, 32 Core material, 33 Bead cushion, 33a Outer material, 33b Beads, 34 Sewing thread, 35 Shoulder pad, 36 Strap, 100 Bag, 101 Backpack, 102 Shoulder bag, WD Width direction.

Claims

1. An outer fabric including an outer fabric and an inner fabric, having a width direction in which the outer and inner sides face each other, A core material housed in the outer fabric and extending along the width direction in which the outer and inner surfaces of the outer fabric face each other, The bead cushion is housed in the outer fabric and positioned on the opposite side of the core material from the outer fabric, The aforementioned lining fabric has higher elasticity than the aforementioned outer fabric. The core material is longer than the outer fabric in the width direction of the outer fabric, The lining fabric covers the outer fabric, the core material, and the bead cushion on the inside of the outer fabric, and is a shoulder strap.

2. The shoulder strap according to claim 1, wherein the lining fabric is three-dimensionally stretchable.

3. The shoulder strap according to claim 2, wherein the lining fabric is made of a raschel fabric containing polyamide and polyurethane.

4. A shoulder strap according to any one of claims 1 to 3, A bag comprising a storage compartment to which the aforementioned shoulder strap is attached.

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