These exceptionally luxurious socks are made with Peruvian baby alpaca yarn, a soft, supple and smooth material. Microscopic air pockets throughout the fabric are designed to retain the warmth of your feet. Some nylon reinforcement provides longevity. Not recommended for use under high abrasion shoes. 77% Baby Alpaca; 20% Nylon; 3% Elastane. Short warm wash. May be tumble dried on warm. Do not bleach. Do not professionally dry clean. Do not iron.