The Pro Feet Performance Multi-Sport Polypropylene Socks - Size 9-11 are known as performance socks because they are highly technical and have multiple features that contribute to your performance. Made of a polypropylene/nylon blend +fabric, these tube socks from Pro Feet provide multiple benefits that increase comfort and functionality unlike typical socks. Some benefits of polypropylene technology are superior moisture wicking to keep your feet cool and dry by wicking perspiration to the surface, bacteria and odor resistance, and a durable, lightweight feel that will last. The tube socks have a half cushion foot which provides a platform to absorb shock and reduce stress on the foot. Double welt design at the top of the socks ensure that the socks will stay up better than typical socks during the game.