LIGHTWEIGHT: no added bulk inside the shoe - suitable for almost every type of outdoor adventure MATERIALS: 63% Wool, 37% Nylon REINFORCED DURABILITY: a blend of natural and synthetic fibers extend the life of the product COMFORTABLE: non Binding, no itch - these socks will deliver comfort mile after mile USA MADE SINCE 1905: Wigwam support domestic yarn spinners whenever possible and work with them to get the best quality natural and manmade fibers and yarn for all of our products