FEATURES 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. SPECS Extra Cushion: Our thickest, burliest and highest density cushioning makes for a big, bad monster of a sock. Micro Crew Height: A shorter, more concise take on the traditional crew height. Peeks just above the top of a standard hiking boot. 70% Merino Wool 28% Nylon 2% LycraA(R) Spandex