Patent ID: 9572400
Date: 2017-02-21
CPC Classifications: A43B

Claim:
1. An article of footwear having an upper and a sole structure secured to the upper, the sole structure comprising: a first midsole element formed from a first material having a first degree of compressibility, the first midsole element being positioned adjacent to the upper; a second midsole element formed from a second material having a second degree of compressibility less than the first degree of compressibility, the second midsole element having an upper surface and an opposite lower surface, the upper surface being positioned adjacent to a lower area of the first midsole element, the second material contacting the lower area of the first midsole element, the second midsole element defining a plurality of apertures that extend from the upper surface to the lower surface and completely through the second midsole element, an upper portion of each of the apertures being located adjacent to the lower area of the first midsole element; and an outsole secured to at least one of the first midsole element and the second midsole element, wherein a protrusion extends upward from the upper surface of the second midsole element and extends into a depression in the lower area of the first midsole element, the protrusion being located at a portion of a heel region of the sole structure adapted to be positioned below a calcaneus bone of a wearer, and wherein at least one of the apertures extends through the protrusion.