Hike funky, hike further. The Sierra Stripe is built for miles of comfort and durability on the trail and looks great when it's time to go into town. 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 cushion: Light and strong with a thin layer of cushioning along base of foot. Micro crew height: A shorter, more concise take on the traditional crew height, peeks just above the top of a standard hiking boot. Material: Nylon, Merino Wool, Lycra, Spandex.