Avia - A208w (Chrome Silver/White/Lupine Purple) - Women's: Cantilever(R) System acts like a trampoline to soften impact, stabilize the heel and provide increased energy return. ARC(R) technology in heel (follows the Cantilever(R) shape) adds stability and support upon heel strike and additional spring at liftoff as the plate returns to its original shape. Anatomical Cradle improves both motion control and shock absorption by mimicking the bottom of your heel in your midsole. Also reduces twisting on both ankles and knees. Breathable mesh with leather overlays. Removable molded EVA sockliner and FlexFom(tm) midsole compound. Solid rubber outsole with forefoot flex grooves.