Factor Boltz Black Soccer Socks 74% Polyester, 15% Nylon, 11% Lycra Elastane Imported Cushioned toe, heel, and bottom with ankle and arch compression Lycra for stretch comfort with stay up top ribbing Dry cool material wicks away sweat and keeps your feet cool Fits shoe sizes: Youth 4y-6y women 5-10 men 6-8.5 Care:machine wash cold and hang dry for best results