The sock that made a name for itself from the Pacific Crest Trail to the AT. \"Must pack\" durability meets undeniable comfort in a Full Cushion sock that absorbs the rigors of the trail.. 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.. True Seamless™: Undetectable seam fusion for an ultra smooth, invisible feel.. More Info & Care -. Full Cushion: High density cushioning throughout the entire sock for full on comfort and performance.. Boot Height: Sits mid-calf for added protection and warmth. A sturdy companion.. 66% Merino Wool, 32% Nylon, 2% Lycra® Spandex