55% Cotton, 45% Polyester Made in the USA and Imported Pull On closure Machine Wash These are the best heavy duty socks made to wear with any type of boot - steel toe, hiking, hunting or athletic Extra reinforcement is built into high impact areas for long lasting socks and added comfort These aren't your basic work socks for men - these are performance socks that fight odor, wick moisture. Premium ring spun cotton Work Gear socks are designed to be all-season. They are breathable socks for when it's warm but thick enough for when it's cold during the winter.