63% Alpaca Wool, 26% Nylon, 11% Spandex Made in the USA Alpaca Wool Keeps Feet Warm: Premium alpaca wool ski socks. No cold toes while skiing snowboarding. Midweight & Technical Design: Stylish design with advanced technology, midweight thickness cushion. All Day Comfort: The alpaca wool in the ski socks is moisture wicking, preventing buildup of sweat. Alpaca Wool from Pure Athlete: Designed by experts who know what you need for skiing snowboarding. Made in the USA: Alpaca Ski Sock for the perfect mix of quality manufacturing durability & comfort.