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. SPECS Ultra-Light Cushion: Provides a light layer of cushioning along the bottom of the foot. Ultra-Light, ultra-comfortable. 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. 49% Merino Wool 48% Nylon 3% Lycra® Spandex CUSHIONING ULTRA-LIGHT WEIGHT WITH CUSHION: Provides a light layer of cushioning along the bottom of the foot. Ultra-Light, ultra-comfortable.