In honor of the Civilian Conservation Corps youth who helped shape Darn Toughs modern National Park System, they made the Northwoods hiking sock to work hard. But hard labor is no match for their soft, snug fit. Sure, they'll crush trails like a pound of dynamite, but with details like breathable cushioning and low-profile, slouch-free 1x1 ribbing, the only grunt you'll make is when the wildlife tries to steal these socks. A performance fit means no slipping, no bunching, no blisters for peak hiking comfort Merino Wool is at home on the trail, naturally moving moisture to keep feet fresh and dry in all weather The all-season weight, midweight socks thermoregulate to wrap feet in steady comfort when temperatures change Materials 58% merino wool, 40% nylon, 2% lycra spandex