Adidas Performance Men's Energy Volley Boost 2.0 Volleyball Shoe 100% Textile and Synthetic Imported Synthetic sole Shaft measures approximately 2.71" from arch boost is our most responsive cushioning ever: The more energy you give, the more you get Seamlessly bonded SPRINTWEB provides breathable, lightweight support Mesh tongue provides maximum ventilation; Gradient color fading and prominent 3-Stripes for a premium look Flexible SPRINTPLATE beneath the forefoot adds power and stability to every jump and landing Decoupled outsole offers excellent shock absorption