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. Performance Fit: No slipping, no bunching, and no blisters. Fine Gauge Knitting: Unprecedented durability and our uniqueput it on, forget its onfeel. Fast Action Wicking: Pulls moisture away from skin. Fast drying. All Weather Performance: Cool in the summer, warm in the winter. Merino Wool is fast drying, breathable and odor resistant for all-day comfort. MaterialsCushion: 64% merino wool, 33% nylon, 3% lycra spandex Full Cushion: 66% merino wool, 32% nylon, 2% lycra spandex Height: Boot Weight: Midweight