Darn Tough Men's Performance Fit Hiking Socks - Built to withstand the rigors of the trail and come away smiling on a layer of cushioned comfort. This humble sock has earned a hallowed place in the hearts of many a discerning thru-hiker. Discover the trail legend for yourself. 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. Merino Wool: The ultimate fiber for breathability and comfort in all conditions. True Seamless(TM): Undetectable seam fusion for an ultra smooth, invisible feel Cushion: Mid-level cushion density under foot. A warm and ultra-comfortable choice when conditions demand it Sits mid-calf for added protection and warmth. A sturdy companion 64% Merino Wool, 33% Nylon, 3% Lycra(R) Spandex Style: 1403