Designed with light and fast speed in mind, the Mizuno Wave Sonic is here to help runners and racers achieve their personal bests. This low-profile racing shoe is slim, streamlined and built with U4icX foam Wave technology for quick turnovers. The zig zag outsole further enhances speed from a runners toe-off. Upper: Light, sleek seamless overlays and sock-like construction provide a glove-like fit. Midsole: Midfoot U4icX Wave construction provides lightweight cushioning. A lower midsole drop allows for natural running position and efficiency. Outsole: X10 solid rubber outsole at the heel and midfoot for durability and forefoot zig zag pattern for snappy toe off.