Sole and shoe

Abstract

A sole includes a midsole, a bottom plate, a top plate, and at least one pin retaining member. The bottom plate includes a plate body having a reference surface and at least one base portion. The bottom plate includes a thenar region corresponding to an area located between a first portion and a second portion to support a big toe of a foot. The first portion corresponds to 20% of a total length of the sole from an MP overlapping portion toward a front side, and the second portion corresponds to 20% of the total length of the sole from the MP overlapping portion toward a rear side. The at least one base portion includes a thenar base portion disposed in the thenar region. A lower surface of the thenar base portion is formed to be flush with the reference surface or recessed above the reference surface.

What is claimed is: 
     
         1 . A sole forming a part of a shoe, the sole comprising:
 a midsole;   a bottom plate connected to a lower surface of the midsole;   a top plate connected to an upper surface of the midsole; and   at least one pin retaining member that is configured to retain a spike pin,   
       wherein
 the bottom plate includes
 a plate body having a reference surface, and 
 at least one base portion that holds the at least one pin retaining member, 
 
 the bottom plate includes a thenar region corresponding to an area located between a first portion and a second portion to support a big toe of a foot of a wearer of the shoe, the first portion corresponds to 20% of a total length of the sole extending toward a front side in a foot length direction of the sole from an MP overlapping portion that overlaps with an MP joint of the foot of the wearer in a thickness direction of the sole, and the second portion corresponds to 20% of the total length of the sole extending toward a rear side in the foot length direction from the MP overlapping portion, 
 the at least one base portion includes a thenar base portion disposed in the thenar region, and 
 a lower surface of the thenar base portion is formed to be flush with the reference surface or to be recessed above the reference surface. 
 
     
     
         2 . The sole according to  claim 1 , wherein
 the bottom plate includes a toe region located in a forward portion of the first portion in the foot length direction to support a toe of the foot of the wearer in the thickness direction,   the at least one pin retaining member includes a plurality of pin retaining members, and   the at least one base portion includes a toe base portion disposed in the toe region.   
     
     
         3 . The sole according to  claim 2 , wherein
 the bottom plate includes a lateral foot-side region corresponding to an area located between the first portion and the second portion to support a little toe of the foot of the wearer, and   the at least one base portion includes a lateral foot-side base portion disposed in the lateral foot-side region.   
     
     
         4 . The sole according to  claim 2 , wherein a lower surface of the toe base portion protrudes downward from the reference surface. 
     
     
         5 . The sole according to  claim 3 , wherein a lower surface of the toe base portion and a lower surface of the lateral foot-side base portion are formed to be flush with the reference surface. 
     
     
         6 . The sole according to  claim 1 , wherein the at least one pin retaining member is capable of detachably retaining the spike pin. 
     
     
         7 . A shoe comprising:
 the sole according to  claim 1 ; and   an upper connected to the sole and forming, together with the sole, a space in which the foot of the wearer is received.