Patent ID: 6898871

Claim:
A shock-absorbing device for use in footwear, comprising 1) a base having an upper surface adapted to confront the bottom surface of a user's foot, and a lower surface adapted to contact a walking surface; 2) a plurality of first projections distributed on and upward from the upper surface, and projecting a normal direction to the bottom surface of the foot; 3) a plurality of second projections distributed on and projecting downward from the lower surface; and 4) a heel portion comprising a plurality of laterally-aligned and flexible, upright wall elements having a wave configuration spaced apart by a plurality of laterally-aligned channels having a wave configuration; wherein the device provides a shock-absorbing system that is activated by the pressure exerted by foot flexion during walking on a walking surface, whereby the first projections are pressed in contact with the bottom of the foot.