Shoes

Abstract

A sole of a shoe includes a sole body and a plurality of lower protrusions and a plurality of upper protrusions arranged at least in positions each corresponding to a forefoot in the sole body. The sole body is configured such that hardness of a portion corresponding to a midfoot is higher than hardness of a portion corresponding to the forefoot.

What is claimed is: 
     
         1 . A sole for shoes, comprising:
 a sole body;   a plurality of lower protrusions arranged at least in a position corresponding to a forefoot of a foot of a wearer in the sole body, each protruding downward from the sole body; and   a plurality of upper protrusions arranged at least in a position corresponding to the forefoot of the foot of the wearer in the sole body, each protruding upward from the sole body, each overlapping with an associated one of the plurality of lower protrusions to make a pair of upper and lower protrusions with the lower protrusion in a cross-sectional view, wherein   the sole body is configured such that a hardness of a portion corresponding to a midfoot of the foot of the wearer is higher than a hardness of a portion corresponding to the forefoot of the foot of the wearer.   
     
     
         2 . The sole of  claim 1 , wherein
 the sole body is configured such that a value of bending hardness in the portion corresponding to the midfoot of the foot of the wearer is 0.258 Nm/deg or more.   
     
     
         3 . The sole of  claim 1 , wherein
 an upper surface of the sole body in the position corresponding to the midfoot of the foot of the wearer is formed to be substantially flat.   
     
     
         4 . The sole of  claim 1 , wherein
 the sole body has an outsole and a midsole arranged on the outsole, and   the midsole is configured such that a Young's modulus of a portion corresponding to the midfoot of the foot of the wearer is 0.75 MPa or more.   
     
     
         5 . The sole of  claim 1 , wherein
 a reinforcement body made of a material having higher hardness than the hardness of the sole body is provided in the position corresponding to the midfoot of the foot of the wearer in the sole body, and   the reinforcement body extends from a position corresponding to a Lisfranc joint of the foot of the wearer to a position corresponding to a Chopart joint of the foot of the wearer in a foot length direction in the sole body.   
     
     
         6 . A sole for shoes, comprising:
 a sole body;   a plurality of lower protrusions arranged at least in a position corresponding to a forefoot of a foot of a wearer in the sole body, each protruding downward from the sole body; and   a plurality of upper protrusions arranged at least in a position corresponding to the forefoot of the foot of the wearer in the sole body, each protruding upward from the sole body, each overlapping with an associated one of the plurality of lower protrusions to make a pair of upper and lower protrusions with the lower protrusion in a cross-sectional view, wherein   the sole body is configured such that a thickness of a portion corresponding to a hindfoot of the foot of the wearer is larger than a thickness of a portion corresponding to the forefoot of the foot of the wearer.   
     
     
         7 . The sole of  claim 6 , wherein
 the sole body is configured such that a difference between the thickness of the portion corresponding to the hindfoot of the foot of the wearer and the thickness of the portion corresponding to the forefoot of the foot of the wearer is 8 mm or more.   
     
     
         8 . A shoe comprising:
 the sole of  claim 1 .   
     
     
         9 . A shoe comprising:
 the sole of  claim 2     
     
     
         10 . A shoe comprising:
 the sole of  claim 3 .   
     
     
         11 . A shoe comprising:
 the sole of  claim 4 .   
     
     
         12 . A shoe comprising:
 the sole of  claim 5 .   
     
     
         13 . A shoe comprising:
 the sole of  claim 6 .   
     
     
         14 . A shoe comprising:
 the sole of  claim 7 .