Smart, nimble and tough, just like the wily woodland creatures on this sock. Built for life's daily adventures and the moments that inspire. Details: Performance fit - no slipping, no bunching, and no blisters, fine gauge knitting for unprecedented durability and unique ''put it on, forget it's on'' feel, fast action wicking pulls moisture away from the 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), merino wool -the ultimate fiber for breathability and comfort in all conditions, true Seamless undetectable seam fusion for an ultra smooth, invisible feel. Light: Built light, darn comfy and super strong substantial construction for a lightweight, sure fit. Crew sock height: A classic, versatile height that hugs the calf, a sock drawer staple. Material: Nylon, Merino Wool, Lycra, Spandex.