Patent ID: 8505215

Claim:
An article of footwear, comprising: a sole including an outer peripheral edge; a forefoot portion of the outer peripheral edge having a first cross sectional profile shape; an arch portion of the outer peripheral edge having a second cross sectional profile shape; and a heel portion of the outer peripheral edge having a third cross sectional profile shape on at least one of a lateral side and a medial side of the heel portion, wherein the first cross sectional profile shape, the second cross sectional profile shape, and the third cross sectional profile shape are different from one another, wherein the third cross sectional profile shape of the heel portion includes a lower portion and an upper portion, wherein the lower portion has a substantially convex cross sectional profile shape, wherein the upper portion has a substantially concave cross sectional profile shape, wherein the third cross sectional profile shape of the heel portion includes a transition edge at which the substantially convex cross sectional profile shape of the lower portion transitions to the substantially concave cross sectional profile shape of the upper portion, wherein the substantially convex cross sectional profile shape of the lower portion of the first cross sectional profile shape gradually decreases in radius of curvature moving in a direction from the arch portion to the heel portion, wherein the substantially concave cross sectional profile shape of the upper portion of the first cross sectional profile shape gradually decreases in radius of curvature moving in the direction from the arch portion to the heel portion, and wherein the transition edge extends increasingly laterally outward from the sole moving in the direction from the arch portion to the heel portion.