The sole structure illustrated in the drawings is a first embodiment showing a right-footed form of the sole structure. A second embodiment is for the left-footed form of the sole structure, which is a mirror image of the right-footed form, is not illustrated. The crosshatched areas depicted in the figures represent a contrast in appearance and do not represent any particular color, material, texture, or finish. The shading is provided to show the complex curvatures (contouring) of the sole structure.