Keep your feet cool, dry and blister free with these Wigwam Ironman Thunder Pro Socks Product Features: Dri-release® keeps feet dry FreshGuard® odor control Heel tab reduces slippage Cushioned sole Seamless toe closure 56% Dri-Release (85% Polyester, 15% Cotton), 25% Nylone, 17% X20® Acrylic, 2% Stretch Polyester