Ergonomically engineered to help optimize your body's alignment, natural movement and energy. Features a light pressure-diffusing microwobbleboard midsole with triple-density cushioning that follows 3 footstep stages: firm heel, soft middle, and medium at toes. Offers natural arch support. Designed for an average to wide fit, this style fits true to size. Grip level 1 is suitable for everyday use and road tread.