Patent ID: 8919015

Claim:
An article of footwear comprising an upper and a sole structure secured to the upper, the sole structure extending through a length of the footwear and from a lateral side to an opposite medial side of the footwear, and the sole structure defining a first surface and an opposite second surface, the first surface being joined to the upper, and the second surface forming a ground-contacting area of the footwear that defines: a macro groove having (a) a length extending from the lateral side and toward the medial side and (b) a depth extending into the sole structure and toward the first surface; and a plurality of micro grooves located within the macro groove, the micro grooves having (a) lengths extending from the lateral side and toward the medial side and (b) depths extending into the sole structure and toward the first surface, the length of the macro groove being greater than the lengths of the micro grooves, and the depth of the macro groove being at least three times the depths of the micro grooves.