Ergonomically engineered to help optimize your body's alignment, natural movement & energy. A pocket of high-rebound impact-reducing Dynamicush cushioning is hidden in the rubber outsole, maximizing comfort in flat styles. Anatomically contoured EVA-foam footbed diffuses pressure & gives natural arch support. Slim fit. If you have wider feet, consider sizing up half a size for a more comfortable fit. Grip level 1 – everyday use/road tread.