Darn Tough | Mountaineering OTC Heavyweight | Full Cushion | Men's XL

If you’re out there in the cold, you need the Mountaineering sock with you. Streamlined performance fit. Chock full of Merino Wool warmth. Extra Cushion: Darn Tough's thickest, burliest and highest density cushioning makes for a big, bad monster of a sock. Over the Calf Height: The name says it all. The ultimate height for keeping the outside-out. 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. Fast drying. All Weather Performance: Cool in the summer, warm in the winter. Naturally Antimicrobial: Repels bacteria and odor. Guaranteed For Life: No strings. No conditions. For life. 73% Merino Wool 25% Nylon 2% Lycra Spandex