The Dickies Dri-Tech Crew Sock has moisture control fibers that keep the feet dry when you need it at work. This sock is breathable as it features ventilation channels engineered for air circulation and moisture control. Help keep the moisture wicked away with these crew socks. White: 53% Poly, 41% Cotton, 5% Nylon, 1% Spandex; Black: 75% Cotton, 19% Poly, 5% Nylon, 1% Lycra Spandex. Reciprocated Heel & Toe for Fit & Comfort. Dickies Dri-Tech Comfort Collection: moisture wicking fibers & mesh ventilation channels to keep feet dry.