Built Darn Tough for hikers seeking comfort, performance, and funky style, the Via Ferrata Micro Socks feature a smooth fit, cushioning under the foot, and the breathable comfort of soft merino wool. 65% merino wool, 30% nylon, 54% Lycra spandex. High density cushioning along the bottom of the foot for all weather hiking performance without bulk. Micro crew height slightly shorter than crew height. Made from ultrasoft merino wool, nylon, and Lycra spandex in a high density knit for Darn Tough durability and blister free bliss. Highly breathable fine gauge merino wool keeps feet warm when its cold and cool when its warm. Merino wool wicks moisture away from your feet, dries fast, and naturally resists bacteria and odor for stink free wear. Form fitting toe box, sculpted heel pocket, and knit in arch support for a performance fit with no slipping or bunching. Knit in elastic arch support for increased endurance. Machine wash warm inside out, gentle cycle tumble dry low will not shrink. Made in Vermont, USA.