These black ankle socks are made from Oeko-Tex certified cotton, the socks have a soft full-plush cotton foot bed from the toes right back to the heel. The cotton is highly absorbent so quickly absorbs the sweat and provides enormous comfort during tennis, other sporting activities and are even worn casually off the court. The highly elastic knitted rib make this a great fitting, durable sock that delivers high levels of comfort and fit time and time again. The wide band around the ankle is a higher compression level than the rest of the sock keeping the sock in place throughout any game of tennis without digging into your leg.