High-heeled shoe insole with improved breathability

Abstract

The utility model discloses a kind of high-heeled shoes insole for improving air permeability, including upper insole and lower insole, upper insole is set in the upper portion of lower insole, upper insole is equipped with multiple upper air holes, the upper surface of lower insole is equipped with lower air passage, the rear side of heel of lower insole is provided with at least one exhaust hole, the rear end of lower air passage is communicated with exhaust hole, each upper air hole is communicated with lower air passage respectively;Upper insole is provided with front buffer rubber pad and rear buffer rubber pad, front buffer rubber pad and rear buffer rubber pad are respectively equipped with vertically through buffer air hole, buffer air hole is communicated with upper air hole.Air in high-heeled shoes is discharged into lower air passage by upper air hole, air in lower air passage is directly discharged into atmosphere by exhaust hole, and air permeability is strong;Exhaust hole is located in side surface, to prevent liquid from entering;Through front buffer rubber pad and rear buffer rubber pad, cushioning performance is improved, and wearing comfort is high, air permeability is improved, and cushioning property is increased simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of shoe midsole technology, and in particular to a high-heeled shoe midsole that improves breathability. Background Technology

[0002] High heels are a common footwear choice for women, and the midsole, as a crucial component between the upper and sole, plays a key role in wearing comfort. Current high heel midsoles are typically made of a single material, resulting in poor breathability. Prolonged wear can lead to stuffy, sweaty feet, affecting comfort. Existing midsoles rely on a single ventilation hole for ventilation, but this hole only runs vertically through the midsole and is covered by the outsole after the shoe is made, further hindering breathability. Furthermore, the vertical placement of the ventilation hole means that even if a corresponding ventilation hole is made in the outsole, it faces downwards, making it susceptible to liquid intrusion, causing the midsole to become wet and potentially damaged with prolonged soaking.

[0003] In addition, the existing shoe midsole lacks sufficient cushioning performance, resulting in greater impact on the feet during walking and easily causing fatigue. Current shoe midsoles add cushioning pads at the forefoot and heel, but due to the placement of these pads, ventilation holes cannot be designed within their coverage area, resulting in a small ventilation area and poor breathability. Therefore, improvement is necessary. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-heeled shoe midsole that improves breathability and increases cushioning.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-heeled shoe midsole with improved breathability, comprising an upper midsole and a lower midsole. The upper midsole is located above the lower midsole and has multiple vertical ventilation holes that penetrate the upper midsole. The lower midsole has a forefoot portion, an arch portion, and a heel portion arranged sequentially from front to back. The upper surface of the lower midsole has an upward-facing lower ventilation channel that passes through the forefoot portion, arch portion, and heel portion sequentially from front to back. The rear side of the heel portion of the lower midsole has at least one exhaust hole. The rear end of the lower ventilation channel is connected to the exhaust hole. Each upper ventilation hole is located above the lower ventilation channel and is connected to the lower ventilation channel.

[0006] The upper midsole has a front cushioning pad at the front and a rear cushioning pad at the back. Both the front and rear cushioning pads have vertically penetrating cushioning and ventilation holes, and each cushioning and ventilation hole is connected to the corresponding upper ventilation hole.

[0007] In a further technical solution, the lower ventilation channel includes multiple first ventilation grooves, at least one second ventilation groove, and at least one third ventilation groove. The second ventilation groove is located in the arch of the foot, and each of the first ventilation grooves is located in the ball of the foot. The rear end of each of the first ventilation grooves is connected to the front end of the second ventilation groove. The front ends of each of the first ventilation grooves are arranged radially. Each of the third ventilation grooves is located in the heel, and the front end of the third ventilation groove is connected to the rear end of the second ventilation groove. The rear end of the third ventilation groove is connected to the exhaust hole.

[0008] In a further technical solution, a metal plate is provided between the upper midsole and the lower midsole. The metal plate is located above the arch of the foot, and the rear end of the metal plate extends to the heel. At least one fixing hole for fixing screws is provided on the metal plate at the heel. Through holes are provided on both the upper midsole and the lower midsole at the positions corresponding to the fixing holes. A second ventilation groove is provided on the side of the metal plate.

[0009] In a further technical solution, the lower ventilation channel is also provided with a fourth ventilation groove. There are two second ventilation grooves, which are respectively located on both sides of the metal plate. The fourth ventilation groove is located on the front side of the metal plate. The two ends of the fourth ventilation groove are respectively connected to the front ends of the two second ventilation grooves. The rear ends of each first ventilation groove are respectively connected to the fourth ventilation groove.

[0010] In a further technical solution, the third ventilation groove is an arc-shaped third ventilation groove, which is arranged around the outer periphery of the rear end of the metal plate. The two ends of the third ventilation groove are respectively connected to the rear ends of the two second ventilation grooves. Multiple exhaust holes are arranged at intervals on the heel, and each exhaust hole is connected to the third ventilation groove.

[0011] In a further technical solution, the front part of the upper midsole is provided with an upward-facing front fixing groove, and the rear part of the upper midsole is provided with an upward-facing rear fixing groove. The front fixing groove is located above the forefoot, and the rear fixing groove is located above the heel. The bottom of the front fixing groove and the rear fixing groove are respectively provided with multiple upper ventilation holes. The front cushioning pad is embedded in the front fixing groove, and the rear cushioning pad is embedded in the rear fixing groove.

[0012] In a further technical solution, the upper part of the front cushioning pad protrudes from the upper surface of the upper midsole, and the distance between the upper surface of the front cushioning pad and the upper surface of the upper midsole is 1-3mm.

[0013] The upper part of the rear cushioning pad protrudes from the upper surface of the upper midsole, and the distance between the upper surface of the rear cushioning pad and the upper surface of the upper midsole is 1-3 mm.

[0014] In a further technical solution, the cross-sectional shape of the front buffer pad is trapezoidal, and the cross-sectional shape of the rear buffer pad is circular or elliptical.

[0015] In a further technical solution, the upper insole has multiple downwardly protruding positioning posts spaced apart on its edge, and the lower insole has multiple positioning grooves spaced apart on its edge corresponding to the positioning posts, with each positioning post inserted into its respective positioning groove.

[0016] In a further technical solution, the upper midsole is made of EVA material, the lower midsole is made of PU material, and the upper and lower midsoles are connected as one piece by a thermoplastic process. The front cushioning pad is made of latex material, and the rear cushioning pad is made of latex material.

[0017] The advantages of this invention compared to existing technologies are as follows: Air inside the high heel is vented into the lower ventilation channel through the upper ventilation holes, and the air in the lower ventilation channel is then directly vented into the atmosphere through the exhaust holes. The exhaust structure is unobstructed, resulting in strong breathability. The exhaust holes are located on the rear side of the heel, thus being not only higher but also laterally open to prevent liquid from entering and reduce the risk of pebbles clogging the exhaust holes while walking, improving reliability and stability. The front and rear cushioning pads enhance cushioning performance, providing high wearing comfort. Furthermore, the cushioning ventilation holes vent air inside the high heel into the upper ventilation holes, increasing the number and coverage of the upper ventilation holes, thus improving both breathability and cushioning. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This is a top view of the lower insole of this utility model.

[0022] In the picture:

[0023] 1. Upper insole, 11. Upper ventilation holes, 12. Front fixing groove, 13. Rear fixing groove, 14. Positioning post;

[0024] 2. Lower midsole, 211 First ventilation channel, 212 Second ventilation channel, 213 Third ventilation channel, 214 Fourth ventilation channel, 22 Ventilation hole, 23 Positioning groove, 24 Forefoot, 25 Arch, 26 Heel

[0025] 31 Front cushioning pad, 32 Rear cushioning pad, 33 Cushioning vent;

[0026] 4 metal plates, 41 fixing holes. Detailed Implementation

[0027] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0028] A high-heeled shoe midsole that improves breathability, such as Figures 1 to 3 As shown, the system includes an upper midsole 1 and a lower midsole 2. The upper midsole 1 is located above the lower midsole 2. The upper midsole 1 has multiple vertical ventilation holes 11 that penetrate the upper midsole 1. The lower midsole 2 has a forefoot portion 24, an arch portion 25, and a heel portion 26 arranged sequentially from front to back. The upper surface of the lower midsole 2 has an upward-facing lower ventilation channel that passes through the forefoot portion 24, the arch portion 25, and the heel portion 26 sequentially from front to back. The heel portion 26 of the lower midsole 2... At least one vent 22 is provided on the rear side of the upper insole. The rear end of the lower ventilation channel is connected to the vent 22. Each upper ventilation hole 11 is located above the lower ventilation channel and is connected to the lower ventilation channel. A front cushioning pad 31 is provided at the front of the upper insole 1, and a rear cushioning pad 32 is provided at the rear of the upper insole 1. The front cushioning pad 31 and the rear cushioning pad 32 are respectively provided with vertically penetrating cushioning ventilation holes 33. Each cushioning ventilation hole 33 is connected to the corresponding upper ventilation hole 11. Traditional high-heeled shoes often have ventilation holes at the bottom of the midsole that are easily blocked by the outsole, and liquid can easily seep in, causing damage to the midsole. They also have poor cushioning and low comfort. This invention, however, uses various upper ventilation holes 11 to expel air from inside the high heel into the lower ventilation channel. The air in the lower ventilation channel is then directly expelled into the atmosphere through the exhaust holes 22. The exhaust structure is unobstructed, resulting in strong breathability. The exhaust holes 22 are located on the rear side of the heel 26, so they are not only positioned high but also have a side opening to prevent liquid from entering and reduce the risk of pebbles splashing during walking clogging the exhaust holes 22, thus improving reliability and stability. The front cushioning pads 31 and rear cushioning pads 32 enhance cushioning performance and provide high wearing comfort. Furthermore, the cushioning ventilation holes 33 expel air from inside the high heel into the upper ventilation holes 11, increasing the number and coverage of the upper ventilation holes 11, thereby improving both breathability and cushioning.

[0029] Specifically, the lower ventilation channel includes multiple first ventilation grooves 211, at least one second ventilation groove 212, and at least one third ventilation groove 213. The second ventilation groove 212 is located in the arch portion 25, and each of the first ventilation grooves 211 is located in the ball portion 24. The rear end of each of the first ventilation grooves 211 is connected to the front end of the second ventilation groove 212. The front ends of each of the first ventilation grooves 211 are arranged radially. Each of the third ventilation grooves 213 is located in the heel portion 26. The front end of the third ventilation groove 213 is connected to the rear end of the second ventilation groove 212, and the rear end of the third ventilation groove 213 is connected to the exhaust hole 22. The forefoot area 24 is ventilated through the first ventilation groove 211, the arch area 25 through the second ventilation groove 212, and the heel area 26 through the third ventilation groove 213, thus covering the entire midsole. The first ventilation groove 211 is radially distributed, which expands the ventilation coverage area of ​​the forefoot area 24, allowing heat from different areas of the foot to enter the lower ventilation channels more evenly. The interconnected structure of each ventilation groove ensures smooth air conduction from the forefoot to the heel, preventing air stagnation and further improving the overall ventilation efficiency of the midsole, thus providing a balanced relief from stuffiness in different areas of the foot.

[0030] Specifically, a metal plate 4 is disposed between the upper midsole 1 and the lower midsole 2. The metal plate 4 is located above the arch section 25, and its rear end extends to the heel section 26. At least one fixing hole 41 for fixing screws is provided on the metal plate 4 at the heel section 26. Through holes are provided on both the upper midsole 1 and the lower midsole 2 at the positions corresponding to the fixing holes 41. A second ventilation groove 212 is disposed beside the metal plate 4. The metal plate 4 enhances the structural strength and support of the arch section 25 and the heel section 26, better adapting to foot pressure and reducing fatigue in the arch and heel during walking. The fixing hole 41 at the rear end of the metal plate 4, in conjunction with the through holes of the upper midsole 1 and the lower midsole 2, facilitates a stable connection between the midsole and the heel component, improving the overall structural stability. Simultaneously, the second ventilation groove 212, disposed beside the metal plate 4, avoids the metal plate 4 obstructing the lower ventilation channel, ensuring that the ventilation function is not affected by the supporting structure, thus balancing support and breathability.

[0031] Specifically, the lower ventilation channel is also provided with a fourth ventilation groove 214. There are two second ventilation grooves 212, located on opposite sides of the metal plate 4. The fourth ventilation groove 214 is located on the front side of the metal plate 4, with both ends connected to the front ends of the two second ventilation grooves 212. The rear ends of each first ventilation groove 211 are connected to the fourth ventilation groove 214. The two second ventilation grooves 212 increase airflow speed, not only avoiding the metal plate 4 but also further improving breathability. The fourth ventilation groove 214 connects the two second ventilation grooves 212, ensuring that even if one second ventilation groove 212 is blocked, the other second ventilation groove 212 still allows airflow. This creates a more flexible conduction network in the lower ventilation channel while avoiding the metal plate 4, further improving the smoothness and efficiency of ventilation.

[0032] Specifically, the third ventilation groove 213 is an arc-shaped third ventilation groove 213, which surrounds the outer periphery of the rear end of the metal plate 4. Both ends of the third ventilation groove 213 are connected to the rear ends of the two second ventilation grooves 212, respectively. The heel portion 26 is provided with multiple exhaust holes 22 at intervals, each of which is connected to the third ventilation groove 213. The arc-shaped third ventilation groove 213 surrounds the outer periphery of the rear end of the metal plate 4, better adapting to the arc-shaped structure of the heel portion 26, increasing the coverage area of ​​the ventilation channel in the heel portion 26, and making it easier for hot air from the heel portion 26 to enter the channel. The multiple exhaust holes 22 connected to the third ventilation groove 213 can simultaneously expel gas, accelerating the exhaust speed, reducing the retention of hot air in the heel portion, further optimizing the ventilation effect in the heel area, while not affecting the support function of the metal plate 4 for the heel.

[0033] Specifically, the upper midsole 1 has an upward-opening front fixing groove 12 at its front and an upward-opening rear fixing groove 13 at its rear. The front fixing groove 12 is located above the forefoot portion 24, and the rear fixing groove 13 is located above the heel portion 26. Multiple upper ventilation holes 11 are respectively provided at the bottom of the front fixing groove 12 and the rear fixing groove 13. The front cushioning pad 31 is embedded in the front fixing groove 12, and the rear cushioning pad 32 is embedded in the rear fixing groove 13. The front fixing groove 12 and the rear fixing groove 13 securely embed the front cushioning pad 31 and the rear cushioning pad 32, preventing them from shifting during walking and ensuring the stability of the cushioning effect. The upper vent holes 11 opened at the bottom of the front fixing groove 12 and the rear fixing groove 13 are connected to the buffer vent holes 33 of the front buffer pad 31 and the rear buffer pad 32, ensuring that the air permeability path of the area covered by the front buffer pad 31 and the rear buffer pad 32 is unobstructed. This solves the problem that it is difficult to set the vent holes at the position of the buffer pad in the prior art, so that the buffer area has good air permeability at the same time.

[0034] Specifically, the upper part of the front cushioning pad 31 protrudes from the upper surface of the upper midsole 1, and the distance between the upper surface of the front cushioning pad 31 and the upper surface of the upper midsole 1 is 1-3 mm; the upper part of the rear cushioning pad 32 protrudes from the upper surface of the upper midsole 1, and the distance between the upper surface of the rear cushioning pad 32 and the upper surface of the upper midsole 1 is 1-3 mm. The protrusion of the front cushioning pad 31 and the rear cushioning pad 32 from the upper surface of the upper midsole 1 ensures the effectiveness of cushioning without affecting the overall fit between the foot and the shoe midsole due to excessive protrusion, thus balancing cushioning performance and wearing comfort.

[0035] Specifically, the front cushioning pad 31 has a trapezoidal cross-sectional shape, while the rear cushioning pad 32 has a circular or elliptical cross-sectional shape. The trapezoidal front cushioning pad 31 better fits the shape of the forefoot, evenly distributing pressure during forefoot walking; the circular or elliptical rear cushioning pad 32 better matches the pressure area of ​​the heel, specifically mitigating the impact force when the heel lands. These two shapes make the cushioning effect more targeted, improving cushioning efficiency, while their shapes do not obstruct the layout of the ventilation holes, ensuring the integrity of the ventilation channels.

[0036] Specifically, the upper midsole 1 has multiple downward-protruding positioning posts 14 spaced along its edge, and the lower midsole 2 has multiple positioning grooves 23 spaced along its edge, corresponding to the positioning posts 14. Each positioning post 14 is inserted into its respective positioning groove 23. The positioning posts 14 of the upper midsole 1 cooperate with the positioning grooves 23 of the lower midsole 2, enabling quick and precise alignment of the upper midsole 1 and the lower midsole 2 during assembly. This avoids the problem of misalignment causing the upper ventilation hole 11 to be disconnected from the lower ventilation channel, ensuring the stability of the ventilation path. At the same time, the positioning structure enhances the connection between the upper midsole 1 and the lower midsole 2, reducing wear caused by relative displacement during walking and extending the service life of the shoe midsole.

[0037] Specifically, the upper midsole 1 is made of EVA material, the lower midsole 2 is made of PU material, the upper midsole 1 and the lower midsole 2 are connected as one piece by thermoplastic process, the front cushioning pad 31 is a cushioning pad made of latex material, and the rear cushioning pad 32 is a rear cushioning pad made of latex material.

[0038] The upper midsole 1 is made of EVA material, making it lightweight and highly elastic. The lower midsole 2 is made of PU material, improving abrasion resistance and structural stability. They are joined together using a thermoplastic process, balancing lightweight, elasticity, and structural strength. The forefoot cushioning pad 31 and heel cushioning pad 32 are made of latex material, possessing excellent elasticity and resilience, effectively absorbing impact and enhancing cushioning. This rational combination of materials optimizes the midsole's performance in terms of breathability, cushioning, and structural stability, resulting in overall improved comfort and durability.

[0039] During production, EVA sheets are pressed into the upper midsole 1 using a hot press mold. During pressing, it is necessary to conform to the curvature of the high heel midsole, which is thinner at the front and thicker at the back, and to cut off excess corners. The upper ventilation holes 11, the front fixing groove 12, the rear fixing groove 13 and the positioning post 14 are directly formed by hot pressing with the mold, without the need for secondary processing.

[0040] The PU raw material is injected into the mold of the lower insole 2, cooled and formed, and then removed. The first ventilation groove 211, the second ventilation groove 212, the third ventilation groove 213, the fourth ventilation groove 214, the exhaust hole 22 and the positioning groove 23 are directly formed through the mold without secondary processing.

[0041] The latex block is pressed into a front buffer pad 31 and a rear buffer pad 32 by a mold, and a buffer vent hole 33 is formed, or the latex block is drilled by a drilling machine.

[0042] Metal sheet 4 is produced by stamping;

[0043] Finally, the upper midsole 1, metal plate 4 and lower midsole 2 are stacked and hot-pressed into one piece. Finally, the front cushioning pad 31 and the rear cushioning pad 32 are glued and fixed to the upper midsole 1. When gluing, it is necessary to avoid glue clogging the cushioning and ventilation holes 33.

[0044] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A high-heeled shoe midsole with improved breathability, comprising an upper midsole (1) and a lower midsole (2), wherein the upper midsole (1) is disposed on the upper part of the lower midsole (2), characterized in that: The upper midsole (1) has multiple vertical ventilation holes (11) that penetrate the upper midsole (1). The lower midsole (2) has a foot part (24), an arch part (25) and a heel part (26) arranged from front to back. The upper surface of the lower midsole (2) has an upward-facing lower ventilation channel that passes through the foot part (24), the arch part (25) and the heel part (26) from front to back. The rear side of the heel part (26) of the lower midsole (2) has at least one exhaust hole (22). The rear end of the lower ventilation channel is connected to the exhaust hole (22). Each upper ventilation hole (11) is located above the lower ventilation channel and is connected to the lower ventilation channel. The upper insole (1) has a front cushioning pad (31) at the front and a rear cushioning pad (32) at the back. The front cushioning pad (31) and the rear cushioning pad (32) are respectively provided with vertically penetrating cushioning and ventilation holes (33), and each cushioning and ventilation hole (33) is connected to the corresponding upper ventilation hole (11).

2. The high-heeled shoe midsole with improved breathability according to claim 1, characterized in that: The lower ventilation channel includes multiple first ventilation grooves (211), at least one second ventilation groove (212), and at least one third ventilation groove (213). The second ventilation groove (212) is located in the arch of the foot (25), and each of the first ventilation grooves (211) is located in the ball of the foot (24). The rear end of each of the first ventilation grooves (211) is connected to the front end of the second ventilation groove (212). The front end of each of the first ventilation grooves (211) is arranged radially. Each of the third ventilation grooves (213) is located in the heel (26). The front end of the third ventilation groove (213) is connected to the rear end of the second ventilation groove (212), and the rear end of the third ventilation groove (213) is connected to the exhaust hole (22).

3. The high-heeled shoe midsole with improved breathability according to claim 2, characterized in that: A metal plate (4) is provided between the upper midsole (1) and the lower midsole (2). The metal plate (4) is located above the arch part (25). The rear end of the metal plate (4) extends to the heel part (26). At least one fixing hole (41) for fixing screws is provided at the position of the metal plate (4) at the heel part (26). The upper midsole (1) and the lower midsole (2) are provided with through holes at the positions corresponding to the fixing holes (41). The second ventilation groove (212) is provided on the side of the metal plate (4).

4. The high-heeled shoe midsole with improved breathability according to claim 3, characterized in that: The lower ventilation channel is also provided with a fourth ventilation groove (214). There are two second ventilation grooves (212). The two second ventilation grooves (212) are respectively located on both sides of the metal plate (4). The fourth ventilation groove (214) is located on the front side of the metal plate (4). The two ends of the fourth ventilation groove (214) are respectively connected to the front ends of the two second ventilation grooves (212). The rear ends of each first ventilation groove (211) are respectively connected to the fourth ventilation groove (214).

5. A high-heeled shoe midsole with improved breathability according to claim 4, characterized in that: The third ventilation groove (213) is an arc-shaped third ventilation groove (213). The third ventilation groove (213) is arranged around the periphery of the rear end of the metal plate (4). The two ends of the third ventilation groove (213) are respectively connected to the rear ends of the two second ventilation grooves (212). The heel part (26) is provided with a plurality of exhaust holes (22) at intervals. Each exhaust hole (22) is respectively connected to the third ventilation groove (213).

6. The high-heeled shoe midsole with improved breathability according to claim 2, characterized in that: The upper midsole (1) has an upward-facing front fixing groove (12) at the front and an upward-facing rear fixing groove (13) at the rear. The front fixing groove (12) is located above the foot part (24), and the rear fixing groove (13) is located above the heel part (26). The bottom of the front fixing groove (12) and the rear fixing groove (13) are respectively provided with multiple upper ventilation holes (11). The front cushioning pad (31) is embedded in the front fixing groove (12), and the rear cushioning pad (32) is embedded in the rear fixing groove (13).

7. A high-heeled shoe midsole with improved breathability according to claim 6, characterized in that: The upper part of the front cushioning pad (31) protrudes from the upper surface of the upper insole (1), and the distance between the upper surface of the front cushioning pad (31) and the upper surface of the upper insole (1) is 1 to 3 mm. The upper part of the rear cushioning pad (32) protrudes from the upper surface of the upper insole (1), and the distance between the upper surface of the rear cushioning pad (32) and the upper surface of the upper insole (1) is 1 to 3 mm.

8. A high-heeled shoe midsole with improved breathability according to claim 6, characterized in that: The front buffer pad (31) has a trapezoidal cross-sectional shape, and the rear buffer pad (32) has a circular or elliptical cross-sectional shape.

9. A high-heeled shoe midsole with improved breathability according to claim 1, characterized in that: The upper insole (1) has multiple downward protruding positioning posts (14) spaced apart on its edge, and the lower insole (2) has multiple positioning grooves (23) spaced apart on its edge, corresponding to the positioning posts (14). Each positioning post (14) is inserted into each positioning groove (23).

10. A high-heeled shoe midsole with improved breathability according to claim 1, characterized in that: The upper midsole (1) is made of EVA material, the lower midsole (2) is made of PU material, the upper midsole (1) and the lower midsole (2) are connected as one piece by thermoplastic process, the front cushioning pad (31) is a cushioning pad made of latex material, and the rear cushioning pad (32) is a rear cushioning pad made of latex material.

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