These shoes are loaded with Mizuno's cutting-edge features for performance and versatility. Eco Friendly Materials: Recycled materials MIZUNO WAVEA(R): The MIZUNO WAVEA(R) plate disperses energy from impact to a broader area providing a stable platform and a superior cushioning. Gusseted Tongue: Stretchy tongue lining that hugs the foot securely and comfortably without any stress. X10 Outsole: Durable carbon rubber that allows for longer wear. MIZUNO ENERZY NXT: The next generation of MIZUNO ENERZY midsole material. Designed to maximize energy return and cushioning for optimum performance. Engineered Mesh Upper: Both breathable and durable for high performance.