These 75010 Danner Men&';s Merino Midweight Hunting Socks are ethically sourced, non-mulesed merino wool blend makes for a naturally breathable, soft, itch-free sock . Ethically Sourced, Non-Mulesed Merino Wool Blend Makes for a Naturally Breathable, Soft, Itch-Free Sock Seam-Free Toe Design Helps Reduce Bunching and Blisters Targeted Cushioning Where You Need It in Addition to Ventilation Channels to Help Regulate Temperature Designed with Arch Support to Help Reduce Fatigue Fabric Content 82% Merino Wool, 17% Nylon, 1% Lycra Machine Wash Inside Out in Cold Water. Tumble Dry Low or Lay Flat to Dry. No Bleach or Fabric Softener Manufactured in the USA Using Imported Fibers