Enjoy the socks that will trek through hundreds of miles of wilderness with you. The Darn Tough Hiker Micro Crew Cushion Socks have been tested on the Vermont Long Trail, so you know that its moisture-wicking, bunch-free, breathable, and cushioned construction will never let you down. Rain or shine, these were built for it all. Features All weather performance makes it cool in the summer and warm in the winter Fine gauge knitting fits like a second skin Merino wool construction Mid-level cushion density under foot Naturally antimicrobial True seamless design Wicks away moisture and dries fast Won't slip, bunch, or blister Details 61% Merino Wool, 36% Nylon, 3% Lycra-Spandex