DETAILS If you&';re a serious thru-hiker that&';s miles away from the nearest town, blow outs, blisters and other sock B.S. can be disastrous. That&';s why we built this sock to outperform and over-deliver when you need them most. Winner of the 2018 BACKPACKER Editors&&';; Choice Gold Award. 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 is fast drying, breathable and odor resistant for all-day comfort. True Seamless(TM): Undetectable seam fusion for an ultra smooth, invisible feel. SPECS Boot socks sit mid-calf for added protection and warmth. A sturdy companion. 64% Merino Wool, 33% Nylon, 3% LycraA(R) Spandex Additional warmth and protection are the signature characteristics of midweight yarns in the Hike/Trek category. CUSHIONING DETAILS CUSHION Cushion in the Hike/Trek category features terry loops under the foot reaching above the ankle for comfort and protection. FULL CUSHION The Hike/Trek full cushion socks feature terry loops throughout the entire sock for the ultimate rebound and comfort.