Darn Tough Merino Wool Ski Captain Stripe Over-The-Calf Ultralight Sock - Junior's Merino Wool, Nylon, Lycra Spandex Performance Fit: No slipping, no bunching, and no blisters. True Seamless: Undetectable seam fusion for an ultrasmooth, invisible feel. 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; Naturally Antimicrobial: Repels bacteria and odor. Merino Wool: The ultimate fiber for breathability and comfort in all conditions. Still made in Vermont, USA. Still unconditionally guaranteed for life. Over the Calf Height: The name says it all. The ultimate height for keeping the outsideout. Light: Built light, darn comfy and super strongsubstantial construction for a lightweight, sure fit. Materials: 51% Nylon, 45% Merino Wool, 4% LycraSpandex Care: Machine wash warm, tumble or line dry, and do not bleach to keep the colors true. All socks are preshrunk. Performance Fit: No slipping, no bunching, and no blisters. Fine Gauge Knitting: Unprecedented durability and our unique put it on, forget its 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. Merino Wool: The ultimate fiber for breathability and comfort in all conditions. True Seamless: Undetectable seam fusion for an ultra-smooth, invisible feel.