Project Rock training gear was built to help you find boundaries, then push right through them. Everything in this collection was personally approved by Dwayne Johnson, the hardest worker in the room. ANY room. Material wicks sweat & dries fast Ribbed arch support reduces foot fatigue Mesh ventilation on top of foot for added breathability Energy return cushioning in footbed & heel for added protection in high-impact areas without added bulk Seamless Toe delivers superior comfort & reduced irritation Fitted heel contours around foot for a better fit Left/Right specific design Single pair 76% Polyester/21% Nylon/3% Elastane Machine Wash