Light, versatile and always up for more. A dialed-in precise fit makes for a sock that won&';t quit, even when the big challenges arise. 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(TM): Undetectable seam fusion for an ultra smooth, invisible feel. Specs Light: Built light, darn comfy and super strong-substantial construction for a lightweight, sure fit. 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. 51% Merino Wool 45% Nylon 4% LycraA(R) Spandex