Zappos.com is proud to offer the Avia - A1341W (White/Chrome Silver/Pink Gin) - Women's: ECS(R) Original - Ecto Cantilever(R) System uses two specifically designed plates work in unison to provide unsurpassed cushioning and stability. The top plate cradles the foot, keeping it stable while positioning the body's natural heel fat at the point of greatest impact. The bottom plate acts as a cantilever to absorb the impcat each time the heel strikes the ground. Immediately after each impact, both plates return to their original shape without breaking down like traditional foam midsoles. Anatomical Cradle improves both motion control and shock absorption by mimicking the bottom of your heel in your midsole. A cup-like shape in the midsole, created through an anatomically correct last, literally cradles you heel, holding it right where the foot's own natural padding and the shoes cushioning will absorb the most impact. This translates into less shock on the rest of the body. The cradle also centers and holds the heel firmly in place to reduce twisting on both ankles and knees. Fom(tm) compound in the forefoot and heel mimics the way your foot absorbs shock and is located in key impact areas, much the same as the fat pads your foot. Made of extremely soft, yet dense material, fom conforms to your foot on impact for excellent cushioning and comfort, then bounces back to its original shape after each impact. Leather and synthetic upper with reflective features. Removable molded Durapontex sockliner. Compression molded EVA midsole. Solid rubber outsole with exposed TPU shank.