HEAD Men's Eclipse Indoor Shoe 100% Synthetic Rubber and synthetic sole Head Comfort Grid: HEAD CXG Technology guarantees fantastic shock absorption in every step HEAD Radical Contact: Radical Contact ensures a constant point of traction for optimal stability with maximum flexibility and maneuverability HEAD Cooling System: Provides state-of-the-art moisture management and maintains ultimate breathability by absorbing and releasing excess heat buildup HEAD HyBrasion is a high abrasion compound rubber formula specifically designed for the high stress areas of the soles of the shoe HEAD HyBrasion provides long wearing performance on any playing surface