Legendary Darn Tough construction for when “equipment failure” is not an option. Performance Trail Fit means no bunching, no slipping, no blisters. Side vents deliver superior breathability. Darn Tough Hiker 1/4 Sock 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.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™: 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. 1/4 Sock Height: Sits just above the ankle. The “just right” height that’s fast and light. Great for low-cut hikers and running shoes. 61% Merino Wool 37% Nylon 2% Lycra® Spandex