When the conditions require toughness, the Darn Tough Mountaineering Sock Over-the-Calf Extra Cushion is the must have extreme-weather sock.

• Performance Fit: No slipping, no bunching, and no blisters
• Fine Gauge Knitting: Unprecedented durability and our unique “put it on, forget it’s on” feel
• Fast Action Wicking: Pulls moisture away from skin
• All Weather Performance: Cool in the summer, warm in the winter
• Naturally Antimicrobial: Repels bacteria and odor
• Merino Wool: The ultimate fiber for breathability and comfort in all conditions
• Fabric Contents: 74% Merino Wool, 24% Nylon, 2% Lycra^® Spandex