Alpaca Running Sock

The comfort and durability of Alpaca now in a performance sock. High-density Alpaca impact zone area breathable mesh for cooler and drier feet seamless toe ends As always with alpaca, you will enjoy a comfortable and dry experience. 38% Alpaca, 37% Acrylic, 23% Nylon, 2%Spandex Machine wash warm, tumble dry, low heat Unisex   Shoe Size Chart  Small: Women’s 3.5-6 Men’s 3.5-5 Medium: Women’s 5.5-10, Men’s 5-8.5 Large: Women’s 9.5-14, Men’s 9-11.5 Extra Large: Women’s 14-15, Men’s 12-14