One step ahead the always popular no show sock for lasting on course comfort. Dri-Fit fabric actually pulls sweat away from the body and transports it to the fabric surface where it evaporates and leaves the skin cool and dry. It's all you need for hot days, and a critical base layer for cold days. Stay dry and comfortable no matter what. NIKE Dri-FIT No-Show Socks feature Dri-FIT that wicks away perspiration for rapid evaporation. Machine wash and tumble dry. 95% Polyester, 4% other fibers, and 1% Spandex. NIKE Dri-FIT No-Show Socks will help you stay cool when it heats up.