JP6499224B2 - Socks and shoes - Google Patents

Description

  The present invention relates to socks, and more particularly to soccer socks. Furthermore, the invention relates to a shoe, and in particular to a sports shoe.

  Socks, particularly soccer socks, generally provide some functionality to the sock wearer. For example, it provides a contact surface between the foot and the shoe and protects the skin of the foot. In particular, socks can also contribute greatly to increasing the stability of the wearer's foot in the shoe.

  One option for increasing foot stability is to provide grip elements for the socks. For example, US Patent Application Publication No. 2012/0058316, US Patent Application Publication No. 2015/0275422, US Patent No. 7748240, US Patent Application Publication No. 2005/0144703, US Patent Application Publication No. 2004/0221371, US Pat. No. 8,544,300, European Patent No. 2043466, WO 98/20758, and German Utility Model Publication No. 20219015. Various socks applied are known.

  However, the conventional socks to which the grip element is applied may cause skin irritation such as blisters in the portion where the grip element is disposed. Furthermore, conventional socks are not adapted to provide high slip resistance during movement with high pressure loads that occurs in certain sports.

  Teijin offers a synthetic fiber available under the trade name Nanofront®, which is approximately 700 nm thick. According to the company's press release (http://teijin.com/news/2012/ebd120110_00.html), it is known to use such fibers in the production of socks, toe area, heel area, and Such fibers are not used in the upper strip. In addition, according to another press release by the company (http://teijin.com/news/2012/ebd120704_01.html), such fibers are also used in running shoe insoles and shoelaces, Are known.

  Nike also offers socks with nanofibers (http://news.nike.com/news/grip-socks).

  However, the prior art socks cannot fully overcome the above difficulties. As a result, it is not possible to reliably prevent excessive slipping of the foot in the shoe, which in turn may result in blistering and inability to control the movement of the foot.

US Patent Application Publication No. 2012/0058316 US Patent Application Publication No. 2015/0275422 US Pat. No. 7,748,240 US Patent Application Publication No. 2005/0144703 US Patent Application Publication No. 2004/0221371 US Patent No. 8544300 European Patent No. 2043466 Specification International Publication No. 98/20758 Pamphlet German Utility Model Publication No. 20219015 Specification

  The basic problem of the present invention is therefore to overcome at least some of the above-mentioned drawbacks.

  At least some of the above-mentioned problems are solved by the sock according to the present invention. In one embodiment, the sock comprises (a) at least one first portion comprising synthetic fibers having a diameter of less than 1 μm, and (b) one of the at least one first portion is of the sock (C) at least one first portion is greater than 30%, preferably greater than 50%, more preferably greater than 80% of the surface of the sock containing the foot. Occupy.

  In the prior art, the inclusion of such fibers mainly in the midfoot provides improved slip resistance of the foot in the shoe, whereas the present invention is based on a different approach. Here, the sock includes one or more first portions including such fibers disposed on at least a portion of the heel portion of the sock. The inventor has found that the heel region of the foot corresponds to an important initial point of contact for the wearer's movement. Therefore, stabilizing the foot against sliding movement within the shoe is very important in this part of the shoe. Furthermore, the inventor has also found that a significant proportion of the surface of the sock should be composed of such fibers in order to achieve improved sliding properties. As a result, socks according to embodiments of the present invention provide significantly increased slip resistance greater than 30% of its surface, preferably greater than 50%, more preferably greater than 80%. This feature provides foot stability in the shoe during intense movements such as acceleration, deceleration, and lateral movement. In addition, since the slip resistance is more evenly distributed, there is no point load on any particular part of the foot that slides within the shoe. The present invention thus reduces the risk of skin irritation such as blisters, thereby providing improved protection to the wearer.

  The diameter of such fibers is at least 60 times thinner than human hair. Thus, synthetic fibers that can be knitted into a material provide a higher surface compared to conventional fibers, which results in high slip resistance. At the same time, the use of such fibers does not significantly limit the possibility of optimizing socks by similar methods using conventional fibers.

  In one embodiment, the sock further comprises at least one second portion that does not use synthetic fibers having a diameter of less than 1 μm. The inventor has found that the area with the foot must be movable within the shoe. That is, it may not be necessary to increase the slip resistance in such areas in order to provide sufficient flexibility of the foot in each direction during exercise. For example, when a wearer such as a soccer player is competing with another soccer player, the socks provide sufficient stability due to high slip resistance in the heel area of the foot and the necessary flexibility elsewhere. Can be provided.

  In one embodiment, the sock comprises at least two first portions at the heel region of the foot and the toe region. In a more specific embodiment, the first portion can be placed in the toe area under the big toe.

  Such an arrangement of the first part can further increase the slip resistance of the foot within the shoe, especially since the toe region of the foot represents another important point of contact for the wearer's movement. The toe area is located farthest from the heel area. That is, increasing the slip resistance of these two regions can sufficiently control any slip of the foot within the shoe.

  In one embodiment, at least one first portion is disposed on the inner and outer surfaces of the sock. The inventor has found that the inventive concept of increasing slip resistance can be applied to both contact surfaces, i.e. between the foot and the sock, and between the sock and the shoe. Such an arrangement of the first part may provide additional stability.

  In one embodiment, the sock further comprises a shin, and the shin comprises at least one first portion. Such a first part of the sock's shin can provide a high slip resistance, so there is less slippage of the shin rest. This provides maximum protection to the wearer while maintaining good comfort.

  In one embodiment, the sock further comprises at least one first portion in its upper band. If the upper strip of the sock provides high slip resistance to the first portion, it may prevent the sock from slipping unnecessarily at the ankle or calf.

  In one embodiment, the synthetic fibers are incorporated into a yarn having a linear density of 100-200 dtex, preferably 120-180 dtex, most preferably 130-170 dtex. The inventor has found that such yarns achieve a good compromise between the improved slip resistance and stability of the socks and the flexibility, so that the socks fit snugly and tightly on the wearer's foot I found out.

  In one embodiment, the synthetic fiber is adapted to provide greater frictional force of the first portion in the sports shoe in the wet state compared to the dry state. This effect is particularly high for sports applications where the wearer tends to sweat and / or can be placed in bad weather conditions. This is because the entry of water can greatly contribute to the frictional force.

  Furthermore, the inventor has found that the new concept of using such fibers to increase the slip resistance of the foot in the shoe can also be applied to the shoe. According to another aspect of the invention, a shoe, in particular a sports shoe, comprises at least a first part of synthetic fibers having a diameter of less than 1 μm. As explained above, such fibers offer a new possibility to increase the slip resistance between the foot in the shoe or between another item such as a shoe and a ball. In combination with the socks according to the invention or without the socks according to the invention, the wearer of such a shoe can experience a highly improved stability during exercise. Furthermore, such shoes can avoid or at least reduce the risk of blisters. This clearly contributes to comfort.

  In one embodiment, at least one first portion is disposed on the inner surface of the shoe. In further particular embodiments, at least one first portion may be disposed on the heel of the shoe. Further, at least one first portion may be disposed on the toe portion of the shoe. Still further, at least one first portion may be disposed on a lower portion of the toe.

  All of these embodiments follow the same idea of providing high slip resistance for the foot in the shoe during exercise. As explained above, the inventor has found from measurements that the heel and toe regions, especially the region under the big toe, represent points or regions with high pressure loads. The stability here is particularly effective. High shear forces can occur during a wearer's particular movement, such as acceleration or deceleration. By providing the first part in such a region of the shoe having high grip characteristics, a significant improvement in slip resistance of the entire foot can be realized.

  In one embodiment, at least one first portion is disposed on the inside of the shoe upper, eg, the upper. In further particular embodiments, at least one first portion may be disposed inside the heel portion of the upper. Furthermore, at least one first part may alternatively or additionally be arranged inside the toes of the upper.

  The upper of the shoe covers most of the interface between the foot and the shoe. Therefore, the slip resistance of the foot is further increased by providing the first part inside the upper. As a result, the wearer of such shoes does not need to tie the upper tight and loses stability. It is also conceivable to provide such a first part for the shoe. For example, incorporating such fibers into the upper knitting process as a single friction force without the use of shoelaces may be sufficient to provide stability to the foot.

  In one embodiment, at least one first portion is disposed inside the upper instep region. The inventor has found that such shoes can improve the control of their internal feet. For example, many basic movements in soccer require the use of insteps to accurately pass or shoot teammates.

  In one embodiment, at least one first portion is disposed outside the upper. In further particular embodiments, at least one first portion may be disposed outside the upper instep region. Such an embodiment further provides control of items such as a ball that contacts the upper as well as the advantages of high slip resistance and motion control described above. For example, if one first part is placed outside the instep, the soccer player may be able to better control the ball to shoot and pass. Furthermore, due to the large frictional force of the upper surface in such an embodiment, the soccer player can achieve an extraordinary rotating shot.

  In one embodiment, at least one portion can be placed in a shoe last of a board lasted shoe. Such an embodiment provides high slip resistance but does not require an insole.

  According to a further aspect, the present invention relates to a sock, and more particularly to a soccer sock comprising a shin. The shin contains synthetic fibers with a diameter of less than 1 μm.

  Possible embodiments of the invention are further described in the following detailed description with reference to the following drawings.

FIG. 4 is a diagram representing a heat map of a sole with average pressure load data of the foot. FIG. 2 represents a possible embodiment of a soccer sock according to the invention. FIG. 2 represents a possible embodiment of a soccer sock according to the invention. FIG. 2 represents a possible embodiment of a soccer sock according to the invention. FIG. 2 represents a possible embodiment of a soccer sock according to the invention. FIG. 6 is a schematic diagram of a possible embodiment of a shoe according to another aspect of the present invention.

  Possible embodiments and variations of the invention are described below with specific reference to socks and shoes. However, the inventive concept can be applied to any sports equipment, such as functional sportswear or sports equipment components, in the same or similar manner. For example, providing such fibers on the surface of sports equipment can also result in improved grip characteristics. Thus, high wear on the wearer's skin can provide a good fit for wear applications such as a strap such as a sensory chest band, and for sports apparel such as a waistband. In further examples, better grip characteristics may be provided in one or more areas of the glove, which may be advantageous, for example: That is, goalkeeper or field player throw-in in cold weather conditions in soccer, field player throwing, catching and holding in rugby, quarterback controls the ball in American football and wide receiver ball Motor sports such as catching a ball, pitcher throwing the ball, field players catching / throwing the ball and holding the bat, archery controlling the arrow, darts adding more rotation to throw the dart, etc. For example, a driver or a pit crew, a handle in cycling, a fencing weapon control in fencing, a paddle in kayak or boat, etc. For example, gripping the reins, controlling weapons for shooting, gripping golf clubs for golf, standing up before falling into waves for surfing in cold conditions, etc. Such as holding camera and other equipment underwater. In further examples, the outer surface of a sports equipment such as a ball such as soccer, rugby, American football, basketball, baseball, or tennis racket, golf club, baseball bat, badminton racket, cricket bat, ice hockey stick Such fibers can be provided on the surface of parts of sports equipment such as hockey sticks, squash rackets, table tennis rackets and the like. In a further example, an outdoor device such as a backpack provided with a specific grip area containing such fibers may be advantageous for securing the backpack.

  For further brevity, only a limited number of embodiments are described below. However, those skilled in the art will appreciate that the specific features described with reference to these embodiments can be variously modified and combined, and certain aspects of the specific embodiments can be omitted. Furthermore, it should be noted that the aspects described in the detailed description that follows may be combined with the aspects described in the Summary of the Invention above.

  FIG. 1 is a diagram showing a heat map of the sole 100 of the right foot in detail. The heat map of the sole 100 represents the averaged foot pressure load measured from the four major soccer moves of the 20 players. As shown, the sole 100 includes a heel region 110, a midfoot region 120, a toe ball region 130, and a toe region 140. As a result of the heat map, the heel region 110, the toe ball region 130, and in particular the toe region 140 under the toe, includes a portion 150 that exhibits the highest value of the average pressure load on the foot. Accordingly, embodiments of the present invention may provide high slip resistance to these portions in order to realize the above-described advantages of the present invention.

  2A-2D represent an embodiment of a soccer sock 200 according to the present invention.

  As shown in FIG. 2A, the soccer sock 200 comprises a first portion 210a comprising synthetic fibers having a diameter of less than 1 μm (fibers are too fine to be shown in the figure). The first portion 210 a is at least partially disposed on the heel portion of the soccer socks 200. Such fibers are available from multiple manufacturers, such as the Teijin described above. The first portion 210a includes substantially all of the heel portion of the soccer socks 200. In addition, the first portion 210a may include the ankle portion and / or other portions of the soccer socks 200. The foot heel area is somewhat stiff and requires special support and friction control for foot movement during sports such as soccer. Alternatively, the first portion 210a may include only the area under the heel of the soccer socks 200. Such an arrangement of the first portion 210a can be used to achieve selective adhesion of the foot within the shoe. That is, the other part of the sock is arranged so that it can slide in the shoe.

  In addition, the soccer socks 200 may further include a second first portion 210b that is disposed on the thumb ball portion and the toe portion of the soccer socks 200. In summary, the first portions 210a and 210b can occupy approximately 30% of the outer surface of the sock 200 to provide sufficient grip characteristics to the wearer. As shown in FIG. 1, the highest value of the foot average pressure load appears in the corresponding region of the foot. Thus, by providing the above-described high grip properties of the heel fiber, a significant improvement in slip resistance can be achieved on the ball and toe. This can maximize the performance of the soccer player in situations during practice and / or during the game. This is because soccer players have higher stability and better pressure transfer from foot to shoe.

  In one embodiment, the synthetic fibers can be made from a plastic material such as polyester. It is contemplated that any other suitable material, generally well known to those skilled in the art, can be used.

  The soccer sock 200 may further include a second portion 220 that does not use a synthetic fiber having a diameter of less than 1 μm. As noted above, certain parts of the soccer socks 200, such as the upper side of the upper, provide lower slip resistance to allow movement of the foot within the shoe and thus provide the desired flexibility. Can be designed to. It is also contemplated that the first portions 210a and 210b can be configured with different thicknesses. Such different thicknesses may be useful for the soccer socks 200 to provide a firm fit to the surface of the wearer's foot. Furthermore, a thicker portion may provide some kind of buffering in the toe area where the soccer player contacts the ball so that certain areas, such as the toe area of the soccer player, can be protected to prevent injury. In addition to changing the thickness in the first part, it is possible that one of the first part and the second part can be configured with different thicknesses to provide similar advantages.

  In the embodiment of FIG. 2A, the first portions 210 a, 210 b can be disposed on the inner and outer surfaces of the soccer socks 200. As explained above, such placement of fibers between the foot and the soccer socks 200 and between the soccer socks 200 and the shoe provides even higher slip resistance, thereby further adding to the foot within the shoe. It can provide good stability.

  The soccer sock 200 may further comprise a shin that may also include a first portion (not shown in FIG. 2A). As explained above, many soccer players wear shin pads. By providing the first part under the shin, in particular below the wearer's knee, the shin rest can be positioned more reliably. This can prevent the soccer socks 200 from slipping down, thereby improving comfort. Furthermore, it reduces the risk of losing the shin pad and losing protection. It is also conceivable that the first part can extend around the entire shin of the soccer sock according to the invention, which can further enhance the above-mentioned advantages.

  In the embodiment of FIG. 2A, the synthetic fibers can be adapted to provide greater frictional force of the first portions 210a, 210b in the sports shoe when wet compared to dry. Those fibers that are non-uniform on the nanoscale can provide a larger surface of the soccer sock 200 and produce a greater frictional force. This effect is enhanced if the soccer player can sweat or be exposed to bad weather conditions, as water can create additional frictional forces. In other words, the water can act like an adhesive between the soccer socks 200 and the feet and between the soccer socks 200 and the shoes.

  FIG. 2B represents a further embodiment. Here, the soccer sock 200 has one first part 210a at the heel part, one first part 210b at the toe part, and finally a third first part 210c at the middle foot part of the soccer sock 200. Prepare. In addition, the soccer socks 200 also includes two second portions 220 between the first portions 210a, 210b, and 210c. In summary, the first portions 210 a, 210 b, and 210 c can occupy approximately 50% of the surface of the sock 200. Such an arrangement of fibers with high grip properties may be suitable for jumping movements that require a high amount of slip resistance in the longitudinal direction.

  As shown in FIG. 2C, another embodiment soccer sock 200 includes a first portion 210 that includes, for example, greater than 80% of the surface of the sock 200 and the entire sole. In addition, the soccer sock 200 includes one second portion 220. Such an arrangement of the first portion 210 may provide the maximum possible slip resistance for pressure transmission on the sole of the soccer player. For any movement of a soccer player in any direction, such a soccer sock 200 may provide high slip resistance.

FIG. 2D represents the front and back surfaces of a further embodiment. Here, football sock 200, a part of the sock to含包foot, along the sole portion, i.e. along the lower surface of the midfoot, extending one from the toe portion of football socks 200 to the heel part A first portion 210 is provided. Furthermore, the first portion 210 also extends from the heel portion along the Achilles tendon portion. In addition, the first portion also extends to a sock portion that includes the lower portion of the leg. For example, as shown in FIG. 2D, the upper end of a soccer sock 200 having a first portion 210 may encompass the entire lower calf. Furthermore, the soccer sock 200 also includes one second portion 220 that covers the upper surface of the midfoot portion, which does not include a synthetic fiber having a diameter of less than 1 μm. Such an arrangement of the first portion 210 can provide high stability of the foot in a sports shoe, such as the shoe 300 described below. Thus, the possibility of heel injury such as ankle injury or Achilles tendon injury can be prevented with high stability.

  FIG. 3 represents a schematic diagram of a possible embodiment of a shoe 300 according to another aspect of the invention, in particular a soccer shoe. The soccer shoe 300 includes an upper 310 and a first portion 320a including a synthetic fiber having a diameter of less than 1 μm. The first portion 320 a is disposed outside the upper region of the upper 310. As described above, the placement of fibers with such high grip characteristics can provide high slip resistance and control of movement on one side. For example, it may be possible to better control a sports equipment such as a ball, for example a soccer ball. Other types of sports shoes may also benefit from the first portion 320a outside the upper 310 and the like. For example, in a climbing shoe, the first part increases the slip resistance of the shoe outsole on the rock.

  As shown in the A-A cross section, the shoe 300 may include a further first portion 320b disposed on the toe portion of the insole 315 of the shoe 300, particularly the lower portion of the big toe. Further, the first portion 320 b is also disposed on the toe portion of the upper 310. Similar considerations regarding the high slip resistance of the soccer socks 200 can be applied to the shoe 300. Surface-reinforced thin fibers provide additional frictional forces thereby preventing unwanted slipping of the foot within the shoe.

  In the embodiment of FIG. 3, the BB cross section may further include a first portion 320 c in which the shoe 300 is disposed in a midfoot region of the insole 315 of the shoe 300. In accordance with FIG. 2C, the midfoot area can be supported by the high grip characteristics of the fiber to provide sufficient frictional force for the soccer player to accelerate.

  As shown in the C-C cross section, the shoe 300 includes two first portions 320d disposed inside the heel portion of the upper 310 and one first portion disposed at the heel portion of the insole 315 of the shoe 300. A portion 320c may be provided. The aforementioned stability advantage also applies to the foot heel of a soccer player. Further, the possibility of heel injury such as ankle injury can be prevented by the high stability of the foot in the shoe 300. It is also contemplated that such shoes may provide first portions 320b, 320c, and 320d that may allow barefoot competitions, such as sports performed barefoot, such as soccer and / or running. . Furthermore, improved stability of the wearer's feet during kicking and / or jumping movements can help improve wearer performance. Still further, the fibers can be woven in a special direction, for example along the direction from the heel to the toe of the foot, in order to better fix the foot in that direction. Because the foot can be sufficiently stabilized, providing additional grip characteristics may eliminate the need for additional special insoles.

  Finally, it should be noted that combinations of the described socks and the described shoes are also contemplated. Accordingly, the present invention also covers combinations thereof, and the distribution of the first portion of the socks and shoes is clearly corresponding and / or complementary to provide maximum slip resistance. Can be adapted.

The present invention includes the following aspects.
[1]
Socks (200), especially soccer socks,
a. Comprising at least one first part (210a, 210b, 210c) comprising synthetic fibers having a diameter of less than 1 μm,
b. One of the at least one first portion (210a, 210b, 210c) is disposed on at least a portion of a heel portion of the sock (200);
c. The at least one first portion (210a, 210b, 210c) occupies more than 30%, preferably more than 50%, more preferably more than 80% of the surface of the sock (200) containing the foot. The socks (200).
[2]
The sock (200) of [1], further comprising at least one second portion (220) that does not use synthetic fibers having a diameter of less than 1 μm.
[3]
The sock (200) according to [1] or [2], further comprising at least two first portions (210a, 210b, 210c) in the heel region (110) and the toe region (140) of the foot (100). .
[4]
The sock (200) according to [3], wherein the first portion (210a, 210b, 210c) is disposed in the toe region (140) under the thumb of the foot (100).
[5]
The sock (200) according to any one of [1] to [4], wherein the at least one first portion (210a, 210b, 210c) is disposed on the inner and outer surfaces of the sock.
[6]
The sock (200) according to any one of [1] to [5], further comprising a shin portion including the at least one first portion (210a, 210b, 210c).
[7]
The sock (200) according to any one of [1] to [6], further including at least one first portion (210a, 210b, 210c) in an upper belt-like portion of the sock (200).
[8]
The sock (200) according to any one of [1] to [7], wherein the synthetic fiber is incorporated into a yarn having a linear density of 100 to 200 dtex, preferably 120 to 180 dtex, most preferably 130 to 170 dtex.
[9]
The synthetic fibers are adapted to provide greater frictional force of the first part (210a, 210b, 210c) in a sports shoe when wet compared to dry, [1]-[8] The sock (200) according to any of the above.
[10]
A shoe (300), in particular a sports shoe, comprising at least a first part (320a, 320b, 320c, 320d) of synthetic fibers having a diameter of less than 1 μm.
[11]
The shoe (300) of [10], wherein the at least one first portion (320b, 320c, 320d) is disposed inside the shoe (300).
[12]
The shoe (300) according to [10] or [11], wherein the at least one first portion (320a, 320b, 320d) is disposed on an upper (310) of the shoe (300).
[13]
The shoe (300) of [12], wherein the at least one first portion (320d) is disposed inside the upper (310).
[14]
The shoe (300) of [13], wherein the at least one first portion (320d) is disposed inside a heel portion of the upper (310).
[15]
The shoe (300) according to [13] or [14], wherein the at least one first portion (320b) is disposed inside a toe portion of the upper (310).
[16]
The shoe (300) according to any one of [13] to [15], wherein the at least one first portion is disposed inside a midfoot region of the upper (310).
[17]
The shoe (300) of [12], wherein the at least one first portion (320a) is disposed outside the upper (310).
[18]
The shoe (300) of [17], wherein the at least one first portion (320a) is disposed outside the midfoot region of the upper (310).
[19]
The shoe (300) of [11], wherein the at least one first portion (320b, 320c, 320d) is disposed in a shoelace of a board rusted shoe.
[20]
A sock (200), in particular a soccer sock, comprising a shin comprising synthetic fibers having a diameter of less than 1 μm.

100 foot 110 heel region 120 middle foot region 130 toe ball region 140 toe region 150 portion showing the highest value of the average pressure load on the foot 200 socks 210 first portion 210a first portion 210b first portion 210c first portion Part 1 210d First part 220 Second part 300 Shoes 310 Upper 315 Insole 320a First part 320b First part 320c First part 320d First part

Claims (11)

Socks,
Comprising at least three first parts comprising synthetic fibers having a diameter of less than 1 μm,
One of the at least three first portions is disposed in a heel region of the sock and another one of the at least three first portions is disposed in a toe region under a big toe. A further one of the at least three first portions is disposed on the upper strip of the sock;
The at least three first portions occupy greater than 30% of the surface of the sock containing a foot ;
The sock further comprises at least one second part not using synthetic fibers having a diameter of less than 1 μm, the at least one second part comprising the first part of the heel region and the thumb of the toe The socks disposed between the first portion of the lower toe region . The at least three first portions extend from the toe region to the heel region along the sole of the sock, and extend from the heel region to the upper band along the Achilles tendon of the sock. The sock of claim 1, wherein the sock is disposed to extend to the surface. It said at least three first portion, Ru Tei arranged inside and outside surfaces of the sock, sock according to claim 1 or 2. The sock according to any one of claims 1 to 3 , further comprising a shin portion including still another one of the at least three first portions. The sock according to any one of claims 1 to 4 , wherein the synthetic fiber is incorporated into a yarn having a linear density of 100 to 200 dtex. The sock of any one of claims 1-5 , wherein the synthetic fiber is adapted to provide greater frictional force of the first portion in a sports shoe when wet compared to dry. . The sock of any one of claims 1 to 6 , wherein the at least three first portions occupy greater than 50% of a surface of the sock that includes the foot. The sock of any one of claims 1 to 7 , wherein the at least three first portions occupy greater than 80% of a surface of the sock that includes the foot. The sock according to any one of claims 1 to 8 , wherein the synthetic fiber is incorporated into a yarn having a linear density of 120 to 180 dtex. The sock according to any one of claims 1 to 9 , wherein the synthetic fiber is incorporated into a yarn having a linear density of 130 to 170 dtex. The sock according to any one of claims 1 to 10 , wherein the sock is a soccer sock.