Warrior Alpaca Socks - Men's Ultimate Alpaca Socks 47%Alpaca/38%Acrylic/9%Nylon/6%Lycra 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 arch support. Our warmest sock available keeps feet warm and cozy, naturally wicking away moisture and propels odor. Machine wash and tumble dry.