Under Armour Men's Hitch Lite II Crew Boot Socks 42% Acrylic, 22% Wool, 21% Polyester, 12% Nylon, 3% Spandex Imported Lite cushion throughout provides comfort and breathability Embedded arch support helps reduce foot fatigue Arm our dry material wicks moisture, accelerates evaporation Arm our Block technology helps prevent growth of odor-causing bacteria