Its added ankle coverage sports silky next-to-skin ribbing, with breathable flex zones in the forefoot and fatigue-zapping arch support. Specs 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. Guaranteed For Life: No strings. No conditions. For life. Merino Wool is fast drying, breathable and odor resistant for all-day comfort. No Cushion:  Materials: 53% Nylon 40% Merino Wool 7% Lycra Spandex Height: Quarter Weight: Ultra-Lightweight Pair with: Running shoes, trail runners, athletic sneakers