Ergonomically engineered to help optimize your bodys alignment, natural movement and energy. Features a pocket of high-rebound impact-reducing Dynamicush cushioning hidden in the rubber outsole, maximizing comfort in flat styles. Provides steady grip suited for everyday use. If you have wider feet, or are between sizes, consider sizing up for a more comfortable fit. Designed for comfort with an anatomically contoured EVA-foam footbed that diffuses pressure and gives natural arch support.