Ergonomically engineered to help optimize your body's alignment, natural movement and energy; iQushion midsole made of high-rebound EVA air-foam that retains its cushioning, with front-and-back impact pillows; Super-Q version uses innovative injection-molded foam for extreme flexibility, lightness, cushion and bounce; Anatomically contoured footbed diffuses pressure and gives natural arch support; Standard width fit - if you are between sizes, we recommend you size up on this style; Grip suited to everyday use/road tread; Upper Material: Webbing (Polyester)/Microfibre; Lining Material: Nylon/spandex lined upper (partial); Fastening: Slip-On; Outsole: Slip-Resistant Rubber