SockGuy MTN-Tech 1982 Ski Acrylic Socks Ultra-Wicking Micro Denier Acrylic/Nylon/Spandex superior fit and performance that top skiers demand arch and ankle support high performance flyweight designs keeps your feet warm, dry and comfortable in the most demanding alpine conditions 75% Ultra-wicking Micro Denier Acrylic, 15% Nylon, and 10% Spandex