Warrior Alpaca Socks - Men's Ultimate Alpaca Socks with Comfort Band Our proprietary blend contains: 47Alpaca/38Acrylic/9Nylon/6Lycra(C) The thickest alpaca terry lined crew sock made for keeping feet cozy, warm and dry. Made from Natural Alpaca and other synthetic fibers and is 100% Wool Free, Hypoallergenic, and allows feet to breathe. Heavy knap lined from the tip of the toe to the top of the sock opening with a reinforced toe and heel as well as a wide Comfort Band cuff. Our warmest sock available keeps feet warm and cozy, naturally wicking away moisture and repels odor. Machine wash cold and tumble dry on lowest setting.