Avia - 2050 (White/Chrome Silver/Steel Grey/Seaspray Blue) - Women's: Designed for a mild to moderate over-pronator who puts a premium on having a softer ride. Cantilever System technology which centers the heel over a concave sole. The concave sole acts like a trampoline to soften impact, stabilize the heel and provide increased energy return. Anatomical cradle and Dura-Ryd on the forefoot and heel improves both motion control and shock absorption. Synthetic and mesh upper with reflective features. Antibacterial, removable, molded Durapontex. Dual-Durometer compression molded EVA midsole with PU heel and injected TPU shank. Two-piece solid rubber outsole with exposed TPU shank and blown rubber forefoot.