Patent ID: 8453344

Claim:
A shoe sole comprising a mid sole underlying a foot sole, and an outer sole attached to a lower surface of the mid sole, wherein: the outer sole contacts a ground; the mid sole includes a mid sole body of a resin foam, and a compression deformation member that is exposed on a side surface or a back surface of the mid sole; a holding member is provided for holding the compression deformation member at a predetermined position in cooperation with the mid sole body or the outer sole, the holding member including a main bar and a plurarity of blades comprising a mid foot medial blade, a mid foot lateral blade, and rear blades, the mid foot medial blade curvedly extending from a medial portion of the main bar and the mid foot lateral blade curvedly extending from a lateral portion of the main bar; the holding member includes a joined portion secured to an upper surface or a lower surface of the compression deformation member, and a first engagement portion extending on the side surface or the back surface of the mid sole from the joined portion in an upward direction or a downward direction; and the first engagement portion engages with the compression deformation member to prevent the compression deformation member from popping out, the mid sole body includes a recessed portion, wherein a height of the recessed portion in a vertical direction gradually increases from a center of a fore foot part of the mid sole with respect to a front-rear direction and a medial-lateral direction or a middle of the rear foot part with respect to the front-rear direction and the medial-lateral direction toward the side surface or the back surface; the compression deformation member is located in the recessed portion; and the joined portion of the holding member is secured to a lower surface of the recessed portion of the mid sole body, and the first engagement portion extends downward from the joined portion to engage with an upper portion of an edge of the compression deformation member, the mid sole body includes an upper mid sole body including the recessed portion, and a lower mid sole body located below the upper mid sole body; the compression deformation member is sandwiched between the holding member and the lower mid sole body; the lower mid sole body includes a second engagement portion that is rolled upward at an edge of the recessed portion on the side surface or the back surface; and the second engagement portion engages with the compression deformation member to prevent the compression deformation member from popping out.