Under Armour Men's Scent Control II OTC Socks 49% Acrylic, 35% Wool, 15% Nylon, 1% Spandex Imported Scent Control traps odors without the weight 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 Heavy full cushion throughout provides maximum comfort and warmth