Tested on Vermont's Long Trail, Darn Tough Micro Crew Socks provide lightweight cushion and the performance benefits of soft merino wool for miles of comfort and incredible durability. . Made from soft merino wool, nylon and Lycra spandex in a high density knit for Darn Tough durability and blister free bliss. Merino wool regulates temperature, manages moisture, naturally resists odor, and does not shrink or itch. Lightweight high density terry loop cushioning on foot bottom for comfort, performance, and warmth without bulk wont flatten out under pressure. Reinforced heel and toe for abrasion resistance and durability. Elastic support at arch for a secure fit. Ring toe construction for a comfortable, invisible seam. Noncushioned wide ribbed form fitting leg no slipping or bunching. Form fitting toe box and sculpted heel pocket enhance fit. 34 height. Darn Tough socks are made in Vermont. Machine wash warm inside out, gentle cycle tumble dry low.