Patent attributes
A midsole for a running shoe is described, which shoe comprises a rear foot area (150) with a bottom heel portion (20) and an upper heel portion (142). The upper heel portion (142) is molded in one piece with the bottom heel portion and extended vertically to cover the tuberosity (68) of the calcaneus (69). According to the invention, the upper heel portion (142) is asymmetric about a vertical axis (B-B) dividing the midsole (1) into two halves wherein the area of midsole material supporting the heel on the medial side (143) of the upper heel portion (142) is larger than the supporting area of the midsole material on the lateral side (151) of the upper heel portion. This design stabilizes the foot during motion, and contributes to lowering the risk of injury during running.
