New Balance Men's Off Road Trail Runner Quarter Single Pair Sock 39% CoolMax polyester, 17% Wool, 15% Polyolefin, 28% Nylon, 1%Lycra spandex CoolMax-tetrachannel polyester wicks moisture and keeps feet dry Lycra spandex arch support keeps fabric tight Machine wash warm with like colors non-chlorine bleach when needed tumble dry low do not iron do not dry clean Imported