BR112020015820A2 - INSULES FOR A SHOE, AND FOR A HIGH HEEL SHOE, COMBINATION, AND, METHOD FOR FORMING A INSOLE FOR A HIGH HEEL SHOE. - Google Patents

Abstract

it is a shoe insole that can include an upper surface, an opposite lower surface, a rear end and an opposite front end. at least a section of the upper surface near the rear end may be concave. at least a section of the bottom surface near the rear end can be convex. a plurality of spaced holes may extend through the insole from the upper surface to the lower surface. the plurality of spaced apart holes can be arranged in two rows. a first row of the two rows can be spaced radially inwardly relative to a second row of the two rows. each of the plurality of holes in the first row can be the same size. each of the plurality of holes in the second row can be the same size.

Description

1/14

INSOLE FOR A SHOE CROSS REFERENCE TO RELATED ORDERS

[001] This application claims priority for Provisional Application No. US 62 / 627,828, filed on February 8, 2018 and entitled “INSOLES, AND INSOLES FOR HIGH HEEL SHOES” and Provisional Application No. US 62 / 722,212, filed on 24 August 2018 and entitled “INSOLES, INSOLES FOR HIGH HEEL SHOES, AND METHODS OF MAKING AND USING SAME”, both of which are incorporated by reference in their entirety.

FIELD

[002] The technology currently disclosed refers, generally, to insoles. More particularly, in one embodiment, the technology currently disclosed refers to insoles for high-heeled shoes.

BACKGROUND

[003] Figure 1 shows a conventional high-heeled shoe, generally designated 10, which includes a heel 12, a heel chest 14, a heel tip 16, a stem (not visible on the outside of the shoe, but generally in the vicinity of reference number 18) and a forefoot section 20. The nail is an internal component (for example, usually made of metal, composite or other rigid material) that structurally supports the region of the shoe's suspended arch. High-heeled shoes are often uncomfortable for a user, at least because a significant amount of the user's weight is focused on or directed towards the user's foot or forefoot, resulting in high pressures on at least the metatarsal heads of the foot.

[004] Likewise, other shoes, such as shoes that are not high heels, can be uncomfortable for the user. Certain insoles

1/14 INSULES FOR A SHOE, AND FOR A HIGH HEEL SHOE, COMBINATION, AND, METHOD FOR FORMING AN INSOLE

FOR A HIGH HEEL SHOE CROSS REFERENCE TO RELATED ORDERS

[001] This application claims priority for Provisional Application No. US 62 / 627,828, filed on February 8, 2018 and entitled “INSOLES, AND INSOLES FOR HIGH HEEL SHOES” and Provisional Application No. US 62 / 722,212, filed on 24 August 2018 and entitled “INSOLES, INSOLES FOR HIGH HEEL SHOES, AND METHODS OF MAKING AND USING SAME”, both of which are incorporated by reference in their entirety.

FIELD

[002] The technology currently disclosed refers, generally, to insoles. More particularly, in one embodiment, the technology currently disclosed refers to insoles for high-heeled shoes.

BACKGROUND

[003] Figure 1 shows a conventional high-heeled shoe, generally designated 10, which includes a heel 12, a heel chest 14, a heel tip 16, a stem (not visible on the outside of the shoe, but generally in the vicinity of reference number 18) and a forefoot section 20. The nail is an internal component (for example, usually made of metal, composite or other rigid material) that structurally supports the region of the shoe's suspended arch. High-heeled shoes are often uncomfortable for a user, at least because a significant amount of the user's weight is focused on or directed towards the user's foot or forefoot, resulting in high pressures on at least the metatarsal heads of the foot.

[004] Likewise, other shoes, such as shoes that are not high heels, can be uncomfortable for the user. Certain insoles

Conventional 2/14 include relatively small perforations in the anterior section of the foot. These perforations are designed to provide breathability to the insole and help reduce moisture and odor that may persist in the insole. These perforations are too small to increase the flexibility of the insole.

SUMMARY

[005] It would be desirable to provide an insole for a shoe that overcomes the above and other disadvantages of the prior art.

[006] In one modality, the technology currently revealed is generally aimed at improving the feel, comfort and / or performance of insoles and / or shoes, such as, without limitation, high-heeled shoes. The technology currently disclosed includes insoles that have a plurality of spaced out holes that extend through them. The size, shape and arrangement of the holes can contribute to increase the comfort and / or flexibility of a high-heeled shoe.

[007] More particularly, in one embodiment, the plurality of orifices spaced apart allows for variation or selective variability of the properties of a structure produced from a single and / or rigid material. The plurality of spaced holes allows the insole to be flexible in the regions where it is needed or desired, and rigid and / or supportive in other regions of the insole.

[008] In another modality, the technology currently revealed is directed to an insole for a shoe. The insole may include a section of the body that has an upper surface, an opposite lower surface, a rear end and an opposite front end. At least a portion of the upper surface near the rear end may be concave. At least a portion of the bottom surface near the rear end can be convex. The insole can also include the forefoot section that has an upper surface, a lower surface

3/14 opposite, one rear end and one opposite front end. The rear end of the forefoot section can be attached to the front end of the body section. The demarcation line can separate the body section from the forefoot section. The demarcation line can extend over the entire width of the insole. The insole may include a plurality of spaced holes that extend through the body section from the upper surface to the lower surface and / or through the same lower surface.

[009] In yet another modality, the technology currently revealed is directed to an insole for a shoe. The insole may include an upper surface, an opposite lower surface, a rear end and an opposite front end. At least a section of the upper surface near the rear end may be concave. At least a section of the bottom surface near the rear end can be convex. A plurality of spaced holes can extend through the insole from the upper surface to the lower surface. The plurality of spaced holes may be arranged in two rows. A first row of the two rows can be spaced radially inwardly relative to a second row of the two rows. Each of the plurality of holes in the first row can be the same size. Each of the plurality of holes in the second row can be the same size. Each of the plurality of holes in the first row may be smaller than each of the plurality of holes in the second row.

[0010] In yet another modality, the technology currently revealed is directed to an insole for a high-heeled shoe that includes a plurality of open holes that extend through the insole. The plurality of spaced holes increases the flexibility of the insole, thus allowing the insertion to flex more readily, accommodate the shape of the foot, distribute load more evenly, reduce peaks

4/14 load and / or improve comfort.

[0011] In an additional modality, the technology currently disclosed is directed to an insole for a high-heeled shoe that includes a plurality of open holes that extend through the insole. The plurality of open holes increases the flexibility of the insole, thus providing cushioning and / or impact mitigation during running and / or walking.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0012] The aforementioned summary, as well as the following detailed description of the technology currently disclosed, will be better understood when read in combination with the attached drawings. In order to illustrate the technology currently disclosed, several illustrative modalities are shown in the drawings. It must be understood, however, that the technology currently disclosed is not limited to the precise provisions and instrumentalities shown. In the drawings: Figure 1 is a perspective view of a prior art high-heeled shoe; Figure 2 is a top perspective view of an insole according to a modality of the technology currently disclosed; Figure 3 is a bottom perspective view of it; Figure 4 is a top plan view of it; Figure 5 is a bottom plan view of it; Figure 6 is an elevation view of the first side thereof; Figure 7 is an elevation view of a second side opposite it; Figure 8 is a front elevation view of the same; Figure 9 is a rear elevation view of it;

5/14 Figure 10 is seen in elevation of the lateral section of an insole placed on a high-heeled shoe according to a modality of the technology currently revealed; and Figure 11 is an enlarged view of a portion of the combination shown in Figure 10.

DETAILED DESCRIPTION

[0013] Although systems, devices and methods are described in this document by way of examples and modalities, those skilled in the art recognize that the systems, devices and methods of the technology currently disclosed are not limited to the described modalities or designs. Instead, the technology currently disclosed covers all modifications, equivalents and alternatives in the spirit and scope of the attached claims. Any headings used in this document are for organizational purposes only and are not intended to limit the scope of the description or claims.

[0014] Certain terminology is used in the following description for convenience only and is not limiting. The words "bottom", "top", "left", "right", "bottom" and "top" designate directions in the drawings to which reference is made. Unless specifically presented in this document, the terms "one", "one", "o" and "a" are not limited to one element, but should instead be read as meaning "at least one". As used in this document, the word "can" is used in a permissive sense (ie, it means it has the potential for) rather than the mandatory sense (ie, it means it must). The terminology includes the words noted above, derived from them and words of similar significance.

[0015] Referring to the drawings in detail, in which equal numbers indicate equal elements, Figures 2 to 9 show an insole, generally designated 100, according to the technology currently disclosed.

6/14 Figures 2 to 9 show an insole designed for the right foot and a corresponding or mirrored insole can be projected for the left foot. In one embodiment, the insole is designed for high-heeled shoes that have a heel height of two or more inches. However, in one modality, the technology currently revealed can be incorporated into insoles for high or low heel shoes, such as running shoes or sneakers. Although only a ¾-length insole is shown, the technology currently revealed can be incorporated into insoles of any length or width.

[0016] Whether the insole is designed for a high-heeled shoe (for example, two or more inches in heel height) or a flatter shoe, it may depend on the hardness or durometer of the material used to build the insole. For example, an insole board (an example of which is described below) can be made to have a higher or lower durometer. Optionally, a single plate or other portion of the insole can be formed with two or more sections, each of which may have a different durometer. In one embodiment, an insole plate designed for taller shoes (for example, a 10.16 cm (four inch) high heel) has a higher durometer than an insole plate designed for a lower shoe ( for example, running shoes). Likewise, the greater the heel of the shoe, the greater the durometer of the insole plate. The numerical value or range for the durometer of different parts of the insole can depend on several factors, such as the nature of the shoes and the height.

[0017] Referring to Figures 2 to 9, the insole 100 may include a body or rear section 102 that has an upper surface 104, an opposite lower surface 106, a rear end 108 and an opposite front end 110. At least one portion of the upper surface 104 near the rear end 108 may be concave. Fur

7/14 minus a portion of the bottom surface 106 near the rear end 108 may be convex. The body section 102 can include or be formed by a heel section and a midfoot section, which can be designed to support the arch, along with other portions of the foot.

[0018] Insole 100 may also include a forefoot or front section 112 that has an upper surface 114, an opposite lower surface 116, a rear end 118 and an opposite front end

119. At least a portion of the upper surface 114 near the rear end 118 may be flat, or generally, or substantially flat. At least a portion of the lower surface 116 near the rear end 118 may be flat, or generally, or substantially flat. The forefoot section 112 can be designed, dimensioned and / or shaped to support (at least in part, or even completely) the ball of the foot and / or a metatarsal of the foot, or all metatarsals of the foot.

[0019] The rear end 118 of the forefoot section 112 can be attached to the front end 110 of the body section 102. In one embodiment, a demarcation line 120 separates the body section 102 from the forefoot section 112. The demarcation line 120 can extend across an entire width W (see Figure 5) of insole 100. Insole 100 can be configured to fold more easily on boundary line 120 than anywhere else on insole 100. In one embodiment, the demarcation line 120 is only visible at the bottom of the insole 100, and not at the top of the insole (for example, compare Figure 4 to Figure 5).

[0020] As shown in Figures 6 and 7, demarcation line 120 can define the point (or line) at which the forefoot section 112 extends at an angle to body section 102. For example, the upper surface 114 of the forefoot section 112 can extend at an angle, such as approximately 30 degrees, to the upper surface 104 of the forefoot section

8/14 body 102.

[0021] Insole 100 may include means to increase flexibility. In one embodiment, the means for increasing flexibility is a plurality of spaced holes 122 which extends through the body section 102 from the upper surface 104 to the lower surface 106. The holes 122 can increase the ability to attenuate force and / or strength distribution of the insole 100, creating or adding flexibility to the insole 100 and / or creating a more comfortable insole for the user.

[0022] Flexibility is important for two reasons. First, flexibility allows the contour of the insert to flex and accommodate the shape of the foot, distributing the load more evenly, thereby reducing peak loads and increasing comfort. Second, the dynamic flexion of the insert provides cushioning and / or impact mitigation during walking and running.

[0023] Optionally, the holes 122 can decrease the stiffness of the insole 100 and thus make the insole 100 more flexible than if the holes 122 were not included in the insole 100. Alternatively or additionally, the holes 122 provide the spatial redistribution of the charge.

[0024] Optionally, a layer of fabric or cloth (not shown) can be attached to the top surface 104. The layer of fabric can include or omit the holes 122

[0025] The size of the holes 122 can be based on the durometer of the insole plate 100 and / or the curvature of the contour of at least a portion of the upper surface of the insole 100. For example, for an insole with a plate with a longer durometer low, the size of each hole 122 is smaller than an insole with a plate with a higher durometer. On the other hand, in one embodiment, an insole with a plate with a higher durometer has holes 122 that are larger than an insole with a plate with a lower durometer. This is because it is

9/14 less or less flexibility or rigidity is required, due to holes 122, in which a material with a higher durometer is used. The degree of curvature and / or contour of an upper surface of the insole 100 can affect the size of the holes 122.

[0026] Optionally, in one embodiment, larger and more closely spaced holes 122 can be placed or created in portions of the insole where more flexibility is required or desired. Alternatively, smaller or more widely spaced holes 122 can be placed or created in portions of the insole where less flexibility is required or desired.

[0027] In one embodiment, as shown in Figures 2 to 9, the plurality of spaced holes 122 can be arranged in two or more spaced rows. The first row 124 of the two or more rows apart may be spaced radially inwardly with respect to a second row 126 of the two or more rows apart. In one embodiment, each of the first and second lines 124, 126 is arranged to follow or imitate the shape or curvature of the outer peripheral edge of the insole 100. In one embodiment, the forefoot section 112 does not include any holes that extend through it.

[0028] In one embodiment, each hole 122 of the first row 124 is the same size. In the same or a different mode, each hole 122 of the second row 126 is the same size. Optionally, each hole 122 of the first row 124 can be smaller than each hole 122 of the second row 126. More particularly, in one embodiment, each of the holes 122 of both the first and second rows 124, 126 can be circular in shape, and each hole 122 of the first row 124 may have a smaller diameter than each hole of the second row 126. However, the holes 122 are not limited to a circular shape, but may be of any geometry that provides the functionality described in this document. . For example, holes 122

10/14 of the first row 124 may be the same size (e.g., diameter) as the holes 122 of the second row 126.

[0029] In one embodiment, the holes 122 of at least the first row 124 may be small enough so that a user or wearer cannot feel the holes of the first row 124 when wearing the shoes, which include the insole 100, close to the body . Optionally, the holes 122 of the first row 124 can have a diameter in the range of 1-7 millimeters, and the holes 122 of the second row 126 can have a diameter in the range of 1-7 millimeters. For example, in one embodiment, the holes 122 of the first row 124 can have a diameter of approximately 2 millimeters, and the holes 122 of the second row 126 can have a diameter of approximately 3 millimeters.

[0030] Optionally, each hole 122 can be formed during a molding process of the insole 100. Alternatively, each hole 122 can be formed after the molding process is completed, such as during a drilling process.

[0031] As shown in Figures 2, 3, 5-7 and 9, a projection 128 may extend outwardly from the bottom surface 106 of the body section

102. The projection 128 can extend in a continuous serpentine path between each one, or between several, of the adjacent holes 122 in the first row 124. The size, shape and / or configuration of the projection 128 may depend on the size and / or classification of the insole 100. The term "classification" is defined in this document to refer to insoles for different shoe sizes (for example, a size 11 and a size 9 of the same type or style of insole). For example, for insoles of the same type or style, the proportions of the various components or parts of the insoles would be the same, but the size of the various components would be different. The size 11 insole features would need to be classified differently than the size 9 insole features.

11/14

[0032] In one embodiment, the projection 128 is configured to add rigidity or hardness to the insole 100. Alternatively or additionally, the projection 128 functions as a clamp or adds friction between the insole and the inside of a shoe bed. For example, the projection 128 can help to secure the insole 100 inside the shoe and prevent it from moving unwantedly forward in relation to the shoe. In addition, the insole 100 may have one or more additional features to prevent sliding of the insole 100 with respect to the shoe, such as a plurality of spikes 130 extending outwardly from the bottom surface 106 of the body section 102.

[0033] Optionally, the insole 100 is formed at least partially from a foam, polymeric material (or materials) (for example, thermoplastic nylon and / or urethane) and / or composite materials. The insoles can be produced from a material (or materials) separate from the shoe and can be selectively removable and insertable into the shoe. The plate (for example, a contoured plate) can form the lower surface 106 of the body section 102 of the insole 100. In one embodiment, the plate forms the entire lower surface of the body section 102, but does not form part of the lower surface of the forefoot section 112. The plate may be formed of a polymeric material and may be more rigid than a material used to form the upper surface 104 of the body section 102.

[0034] In one embodiment, the insole 100 can be formed by three discrete or different materials or layers. For example, as shown in Figures 2, 3 and 6, the bottom surface 106 of the body section 102 can be formed by a polymeric material 132, an intermediate section of the body section 102 and the bottom surface 116 of the forefoot section 112 can be formed. be formed of a first foam or cloth material 134, and the upper surface 104 of the body section 102 and the upper surface 114 of the forefoot section can be formed of a second foam or foam material

12/14 cloth 136.

[0035] Alternatively, the insole 100 or its plate can be formed from the manufacture of injection molding of multiple materials (MMM), such as molding of multiple components, multiple outlets or overmoulding. In one example, when viewing insole 100 from the perspective of Figure 5, the portion of insole 100 within projection 128 (and possibility including projection 128) can be formed from a first material that has a relatively high durometer. The portion of the insole 100 outside the projection 128 (for example, between the projection 128 and the outer edge of the insole 100) can be formed by a second material having a durometer lower than the first material. The section of the taller durometer can improve support, grip and / or the spring. The lower durometer section can improve flexibility and / or adaptability to different footwear (for example, shoes) and / or individuals. Optionally, the forefoot section 112 can be formed from a totally different material or a third material.

[0036] Optionally, the insole 100 can be designed and / or manufactured separately from a shoe in which the insole 100 is to be used. Insole 100 can be inserted or slid into the shoe for use. In one embodiment, there is no need to mechanically or chemically attach the insole 100 to the inside of the shoe, as by sewing.

[0037] The insole 100 of the technology currently disclosed includes higher side walls than the insoles of the prior art. The higher side walls provide more surface area to support the foot, which dissipates and / or distributes peak pressures. Insole 100 can also provide additional cushioning compared to insoles in the prior art.

[0038] Figures 10 and 11 show another modality of the technology currently revealed. Similar or identical structure between the modality of

13/14 Figures 1 to 9 and the modality of Figures 10 and 11 is distinguished in Figures 1 to 9 by a reference number with a magnitude one hundred (100) greater than that of Figures 1 to 9. The description of certain similarities between the the embodiment of Figures 1 to 9 and the embodiment of Figures 10 and 11 can be omitted in this document for convenience and brevity only.

[0039] The insole of the present embodiment can include a cushioning element 250 and a plate 252. The cushioning element 250 can be fixed to the plate 252, as per adhesive. Alternatively, the cushioning element 250 can be formed with the plate 252. Optionally, a forefoot cushion pad 254 can be attached to the cushioning element 250 or formed as part of the cushioning element

250. The forefoot cushion pad 254 can help hold the insole in place inside the shoe.

[0040] Referring specifically to Figure 10, as identified by area A, the insole of the present modality can be designed to include an arch when the insole is in a resting or inactive position. When in use, the insole may depress in the arch (for example, area A) and then recover or return naturally during gait.

[0041] Referring specifically to Figure 11, as identified by area B, plate 252 may include a large radius to anatomically support the user's heel and / or disperse the downward pressure caused by the foot inside the shoe. The insole may include one or more first set of grip structures and one or more second set of grip structures. The first set of gripping structures can be located and / or spaced on a vertical side wall of the plate 252. The second set of gripping structures can be located and / or spaced on a lower surface of the plate 252.

[0042] The technology currently revealed also includes a method

14/14 of forming (how, without limitation, molding) a shoe insole. Optionally, the shoe can be a high heel shoe that has an heel height of at least two inches. The insole may include an upper surface, an opposite lower surface, a rear end and an opposite front end. The method may include forming (e.g., shaping) a plurality of spaced holes extending through the insole from the upper surface to the lower surface to increase the flexibility of the insole.

[0043] The technology currently disclosed also includes a method for increasing the flexibility of an insole. The method includes forming a plurality of holes spaced through the insole portion which is positioned below the heel and arch of the foot.

[0044] It will be observed by people skilled in the art that changes can be made in the modalities described above without departing from the broad inventive concept of the same. It is understood, therefore, that the technology currently disclosed is not limited to the particular disclosed modalities, but is intended to cover changes in the spirit and scope of the technology currently disclosed as defined by the appended claims.

Claims (27)

1. Insole for a shoe, the insole being characterized by the fact that it comprises: a section of the body that has an upper surface, an opposite lower surface, a rear end and an opposite front end, the body section being configured to support and be positioned below at least one arch and heel of one foot; and a forefoot section that has an upper surface, an opposite lower surface, a rear end and an opposite front end, the rear end of the forefoot section being attached to the front end of the body section, the forefoot section is configured to support and be positioned below at least the ball of the foot, in which a plurality of spaced holes extends through the body section from the upper surface to the lower surface, the plurality of spaced holes being configured to provide flexibility for the insole. 2. Insole according to claim 1, characterized by the fact that a first among the plurality of orifices apart is greater than a second among the plurality of orifices apart. Insole according to any one of claims 1 to 2, characterized by the fact that the plurality of spaced apart holes is arranged in two rows, and in which a remainder of the insole, in addition to the two rows, does not include any orifice. Insole according to any one of claims 1 to 3, characterized in that a first row of the two rows is spaced radially inwardly in relation to a second row of the two rows. Insole according to any one of claims 1 to 4, characterized by the fact that each hole in the first row of the two rows is the same size, and that each hole in the second row of the two rows is the same size. Insole according to any one of claims 1 to 5, characterized by the fact that each hole in the first row is smaller than each hole in the second row. Insole according to any one of claims 1 to 6, characterized by the fact that each hole in the first row has a smaller diameter than each hole in the second row. 8. Insole according to any one of claims 1 to 7, characterized by the fact that each of the holes, both in the first and second rows, has a circular shape. Insole according to any one of claims 1 to 8, characterized by the fact that the forefoot section does not include any holes extending from the upper surface to the lower surface thereof. 10. Insole according to any one of claims 1 to 9, characterized by the fact that a projection extends outwards from the lower surface of the body section, the projection extending in a serpentine path between several of the adjacent holes in the first row. Insole according to any one of claims 1 to 10, characterized by the fact that at least a portion of the upper surface of the body section near its rear end is concave, in which at least a portion of the lower surface of the section the body close to the rear end of the body is convex. 12. Insole according to any one of claims 1 to 11, characterized by the fact that a demarcation line separates the body section from the forefoot section, the demarcation line extending over the entire width of the insole. 13. Insole for a shoe, the insole being characterized by the fact that it comprises: an upper surface, an opposite lower surface, a rear end and an opposite front end, a plurality of spaced holes extending through the insole from from the upper surface to the lower surface, with the plurality of spaced apart holes arranged in two rows, a first row of the two rows is spaced radially inwardly in relation to a second row of the two rows, with each hole in the first row having the same size, each hole in the second row is the same size and each hole in the first row is smaller than each hole in the second row. 14. Insole according to claim 13, characterized by the fact that each hole in the first row has a smaller diameter than each hole in the second row. 15. Insole according to any one of claims 13 to 14, characterized by the fact that it additionally comprises: a section of the body that includes the plurality of open holes; and a forefoot section devoid of any holes extending from an upper surface to a lower surface thereof. 16. Insole according to any one of claims 13 to 15, characterized by the fact that it additionally comprises: a demarcation line that separates the body section from the forefoot section, the demarcation line extending over an entire insole width. 17. Insole according to any one of claims 13 to 16, characterized in that a projection extends outwardly from a lower surface of the body section, in which the projection extends in a serpentine path between several adjacent holes in the first row. 18. Insole according to any one of claims 13 to 17, characterized by the fact that each hole, both in the first and second rows, has a circular shape. 19. Insole according to any one of claims 13 to 18, characterized in that at least one section of the upper surface near the rear end is concave, and in which at least one section of the lower surface near the rear end is convex. 20. Combination characterized by the fact that it comprises: the insole according to claim 1, 2 or 13; and one among a low shoe and a high heel shoe. 21. Insole for a high-heeled shoe that has a heel height of at least two inches, the insole being characterized by the fact that it comprises: an upper surface, an opposite lower surface, a rear end and an opposite front end ; and means for increasing the flexibility of the insole. 22. Method for forming an insole for a high-heeled shoe that has a heel height of at least two inches, the insole including an upper surface, an opposite lower surface, a rear end and an opposite front end, The method is characterized by the fact that it comprises: forming a plurality of spaced holes extending through the insole from the upper surface to the lower surface to increase the flexibility of the insole. 23. Method according to claim 22, characterized in that each orifice of the plurality of orifices is formed by a drilling process. 24. The method of claim 22 or 23, characterized by the fact that it additionally comprises: determining the size and placing each one among the plurality of holes based on a desired amount of flexibility of the insole. 25. Method according to any of claims 22 to 24, characterized in that the plurality of spaced apart holes is arranged in two rows. 26. Method according to any of claims 22 to 25, characterized in that the holes in one row are larger than the holes in the other row. 27. Method according to any one of claims 22 to 26, characterized by the fact that each of the plurality of holes has a circular shape.