If you’re out there in the cold, you need the Mountaineering sock with you. Streamlined performance fit. Chock full of Merino Wool warmth. These socks keep you moving up when the rigors of the trail get you down.. Features-. 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.. Guaranteed For Life: No strings. No conditions. For life.. Merino Wool is fast drying, breathable and odor resistant for all-day comfort.. Sustainability – From responsible sourcing practices to livable wages in our communities - Darn Tough Vermont is committed to progressive, positive, growth.. Our Unconditional Lifetime Guarantee supports a product we believe will last a lifetime, and very few are needed since they can be worn consecutively due to their lasting comfort, durability and fit.. Cushion Details:. Full Cushion. The Hike/Trek full cushion socks feature terry loops throughout the entire sock for the ultimate rebound and comfort.. Material & Care. Machine wash in warm water on gentle cycle with socks inside-out. Do not bleach. Tumble dry on low or hang dry. Do not dry clean.. Full Cushion. Materials: 73% Merino Wool 25% Nylon 2% Lycra Spandex