Avia - 2589 - ECS Atlas (White/Steel Grey/Chrome Silver/Sunshine Yellow) - Women's: Designed for a severe to moderate over-pronator who does not want a mushy feeling but rather a supportive, cushioned ride. ECS-Ecto Cantilever System technology which are two molded plastics in the heel, separated by a dense material, provide cushioning and energy return. Anatomical cradle and Dura-Ryd in forefoot and heel improves both motion control and shock absorption. Light weight synthetic and mesh upper with reflective features. Antibacterial, removable, molded ortholite sockliner with strikes pads in heel and forefoot. Dual-Durometer compression molded EVA midsole with forefoot flex grooves. Dual durometer support struts. High abrasion Dura-Stryk rubber with exposed TPU shank.