Hot Chillys Youth Allstar Mid Volume Socks 75% Acrylic, 12% Nylon, 5% Polyester, 5% Rubber, 3% Elastic Imported All over looped terry back cushioning without extra bulk Moisture Channel Over the calf Machine wash cold All over looped terry back cushioning without extra bulk MTF (moisture transfer fibers) blended yarns Over the calf Mid Volume Sock