Ships in 1-2 business days | Based in Vermont | Est. 1978 Thru-hiking the PCT is not for the faint of heart. Though you might do it alone, you&';ll always be in good company with a pair of great-fitting, moisture-wicking socks. Your best bud is a lightweight hiker with enough cushion to keep your feet in prime condition. If you make it to Canada, swash those socks immediately and start planning the next trip - there&';s always available mileage when your socks are unconditionally guaranteed for life. Darn Tough donates 5% of sales to help support the Pacific Crest Trail Association. 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 the skin. Fast drying All-weather performance: Cool in the summer, warm in the winter Guaranteed for life: No strings. No conditions. For life. Merino wool is fast drying, breathable, and odor resistant for all-day comfort _______________________________________________ Specs Height: Micro Crew Weight: Lightweight Sizing: Size Men&';s Women&';s EU Small 5.5-7.5 7.5-9.5 38 - 41 Medium 8-9.5 10-11.5 42 - 43 Large 10-12 12-14 44 - 46 X-Large 12.5-14.5 - 47 - 49 Materials: 52% Nylon, 45% Merino Wool, 3% Lycra Spandex Made in the U.S.A. _______________________________________________ Wash and Care: Machine wash in warm water on gentle cycle with socks inside-out. Do not bleach. Tumble dry on low or hang dry. Do not dry clean.