Shoes

Abstract

An object of the present invention is to provide shoes with good fitting property.The present invention provides a shoe including: a sole 1 which absorbs landing impact; and an upper 2 which covers an instep of a foot. The upper has a first opening 3 through which the foot is inserted when wearing the shoe. The upper 2 is partly or entirely made of a material which has negative Poisson's ratios.

1 - 11 . (canceled) 
     
     
         12 . A shoe comprising:
 a sole which absorbs landing impact, having a bottom surface at its lowest portion that contacts to a ground when the shoe lands on the ground; and   an upper which surrounds a foot, being disposed over the sole; wherein   the upper has an opening through which the foot is inserted when wearing the shoe; and   the upper is provided with a toe region covering the toe of the foot, a fore-foot region covering one or more metatarsophalangeal joints and a midfoot region covering the midfoot of the foot,   the toe region, the fore-foot region and the midfoot region are made of a negative Poisson material of which a Poisson's ratio is a negative value of a quotient given by dividing a lateral strain by a vertical strain when a stretch force is applied to the negative Poisson material in a row direction, the lateral strain being in a perpendicular direction to the row direction and the vertical strain being in the row direction,   the row directions of the toe region and midfoot region are oriented in a fore-aft direction of the shoe, and   the row direction of the fore-foot region is oriented in an up-down direction of the shoe, which is perpendicular to the fore-aft direction and the bottom surface of the sole.   
     
     
         13 . The shoe according to  claim 12 , wherein
 the fore-foot region is formed with inner and outer fore-foot regions, the inner fore-foot region covering first metatarsophalangeal joint, and the outer fore-foot region covering fifth metatarsophalangeal joint, and   a material that is other than the negative Poisson material, of which the Poisson's ratio is a positive value, intervenes between the inner and outer fore-foot regions such that the inner fore-foot region is physically separated from the outer fore-foot region by the material.   
     
     
         14 . The shoe according to  claim 12 , wherein
 a material that is other than the negative Poisson material, of which the Poisson's ratio is a positive value, intervenes between the toe region and the fore-foot region such that the toe region is physically separated from the fore-foot region by the material.   
     
     
         15 . The shoe according to  claim 12 , wherein
 a material that is other than the negative Poisson material, of which the Poisson's ratio is a positive value, intervenes between the fore-foot region and the midfoot region such that the fore-foot region is physically separated from the midfoot region by the material.   
     
     
         16 . The shoe according to  claim 12 , wherein
 one of the toe region, the fore-foot region and the midfoot region is made in a plurality of layers, and at least one of the layers is formed with the negative Poisson material.   
     
     
         17 . A shoe comprising:
 a sole which absorbs landing impact, having a bottom surface at its lowest portion that contacts to a ground when the shoe lands on the ground; and   an upper which surrounds a foot, being disposed over the sole; wherein   the upper has an opening through which the foot is inserted when wearing the shoe; and   the upper is provided with a toe region covering the toe of the foot, a fore-foot region covering one or more metatarsophalangeal joints, a midfoot region covering the midfoot of the foot and a heel region covering the heel of the foot,   the toe region, the fore-foot region, the midfoot region and the heel region are made of a negative Poisson material of which a Poisson's ratio is a negative value of a quotient given by dividing a lateral strain by a vertical strain when a stretch force is applied to the negative Poisson material in a row direction, the lateral strain being in a perpendicular direction to the row direction and the vertical strain being in the row direction,   the row directions of the toe region and the midfoot region are the same,   the row directions of the fore-foot region and the sole region are the same, and are perpendicular to the row directions of the toe region and the midfoot region.   
     
     
         18 . The shoe according to  claim 17 , comprising:
 the row directions are oriented in either a fore-aft direction of the shoe or an up-down direction, which is perpendicular to the fore-aft direction and the bottom surface of the sole.   
     
     
         19 . The shoe according to  claim 17 , comprising:
 the row directions of the toe region and the midfoot region are oriented in a fore-aft direction of the shoe, and   the row directions of the fore-foot region and the sole region are oriented in an up-down direction, which is perpendicular to the fore-aft direction and the bottom surface of the sole.   
     
     
         20 . The shoe according to  claim 17 , wherein
 a material that is other than the negative Poisson material, of which the Poisson's ratio is a positive value, intervenes between the toe region and the fore-foot region such that the toe region is physically separated from the fore-foot region by the material.   
     
     
         21 . The shoe according to  claim 17 , wherein
 a material that is other than the negative Poisson material, of which the Poisson's ratio is a positive value, intervenes between the fore-foot region and the midfoot region such that the fore-foot region is physically separated from the midfoot region by the material.   
     
     
         22 . The shoe according to  claim 17 , wherein
 a material that is other than the negative Poisson material, of which the Poisson's ratio is a positive value, intervenes between the midfoot region and the sole region such that the midfoot region is physically separated from the sole region by the material.   
     
     
         23 . The shoe according to  claim 17 , wherein
 one of the toe region, the fore-foot region, the midfoot region and the heel region is made in a plurality of layers, and at least one of the layers is formed with the negative Poisson material.   
     
     
         24 . The shoe according to  claim 17 , wherein
 the toe region, the fore-foot region, the midfoot region and the heel region are made in a plurality of layers, and at least one of the layers is formed with the negative Poisson material.