Abstract: A shoe includes a sole with a midsole, and an upper portion joined to the sole. The midsole includes a cut having a linear shape, and a depth from a first height position to a second height position in a thickness direction. The cut is configured such that a part of the cut has no contact point with an other part of the cut, and the cut forms a V shape at the deepest part on a cross section when opposite inner walls of the cut are spaced from each other.

Abstract: A plate is used for a sole that forms a part of a shoe. The plate includes a mid- and rear-foot support portion in a shape extending from a position superimposed on a rear end portion of a metatarsal bone of a wearer of the shoe in a thickness direction of the sole to a position superimposed on a heel bone of the wearer, the mid- and rear-foot support portion supporting a midfoot portion and a rear foot portion of the wearer. The mid- and rear-foot support portion is in a shape convex upward in a cross-section in a foot width direction.

Abstract: A plate is used for a sole that forms a part of a shoe. The plate includes a mid- and rear-foot support portion in a shape extending from a position superimposed on a rear end portion of a metatarsal bone of a wearer of the shoe in a thickness direction of the sole to a position superimposed on a heel bone of the wearer, the mid- and rear-foot support portion supporting a midfoot portion and a rear foot portion of the wearer. The mid- and rear-foot support portion is in a shape convex upward in a cross-section in a foot width direction.

Abstract: A shoe sole includes a body portion and a heel holding portion. The heel holding portion is located opposite to a ground contact surface of the body portion and holds a heel portion of a foot at least from a medial foot side. The body portion includes a low hardness portion and a high hardness portion. The high hardness portion is a foam material harder than a foam material of the low hardness portion. The heel holding portion is a resin harder than the foam material of the low hardness portion and the foam material of the high hardness portion. On the medial foot side in a rear foot portion, the low hardness portion is located between the heel holding portion and the high hardness portion in an up-down direction.

Abstract: A shoe sole includes a cushion layer, an upper-side plate, and a lower-side plate. The cushion layer includes: a first region configured to support a metatarsophalangeal (MP) joint of a foot of a wearer; and a second region included in a portion located on a rear side with respect to the first region and located on a front side with respect to the rearfoot portion. The second region includes: a third region located in a central portion in a left-right direction; a fourth region located in a medial foot-side end portion in the left-right direction; and a fifth region located in a lateral foot-side end portion in the left-right direction. The fourth region and the fifth region are lower in compression rigidity than the first region, and the third region is lower in compression rigidity than the fourth region and the fifth region.

Abstract: A sole includes a midsole. The midsole includes: a first support portion that is configured to support a front portion of an MP joint of a wearer's foot; and a second support portion that is configured to support a rear portion of the MP joint of the wearer's foot, the second support portion having a shape extending rearward from the first support portion in a foot length direction. The first support portion has an elastic modulus lower than an elastic modulus of the second support portion. The midsole includes a thenar region surrounded by a first portion, a second portion, a third portion, and a fourth portion. A boundary portion between the first support portion and the second support portion passes through the thenar region.