Darn Tough Men's Merino Wool Micro Crew Sock Cushion 1466 - 2 Pair 67% Merino Wool, 29% Nylon, 4% Lycra Spandex To help ensure many happy miles with your Darn Tough Vermont socks we recommend that you machine wash them in warm water on gentle cycle with socks in-side out. Do not bleach. Tumble dry on low. Do not dry clean. 2 Pair Included Cushioning along the bottom of the foot naturally antimicrobial