Details Aliens, bears and camels: Darn Tough named the ABC Boot Sock Cushion Sock after everything you're likely to see on an un-average hike, and built it with enough cushioning to keep you cozy when the going gets weird. Material Merino Wool: The ultimate fiber for breathability and comfort in all conditions. 60% Merino Wool 38% Nylon 2% Lycra® Spandex Length Boot Height: Sits mid-calf for added protection and warmth. A sturdy companion. Details Performance Fit: No slipping, no bunching, and no blisters. Fine Gauge Knitting: Unprecedented durability and Darn Tough's 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. True Seamless™: Undetectable seam fusion for an ultra smooth, invisible feel. Weight Cushion: Mid-level cushion density under foot. A warm and ultra-comfortable choice when conditions demand it. Darn Tough ABC Boot Cushion Socks Men's