The elasticized arch brace of the Classic Hike Full Cushion Solid Crew will ensure a secure fit while you hike. But that’s not all there is to like about this classic sock. You’ll also enjoy a flat knit toe seam for in-shoe comfort as well as enhanced durability from sustainable, recycled nylon. And this sock’s finest feature is that it’s made with responsibly sourced, incredibly soft ZQ-certified Merino wool. These socks will help ensure that your feet feel great through all your hiking adventures. Features Our first sock construction, only now featuring recycled nylon (content varies by style) Elasticized arch brace for secure fit Flat knit toe seam for additional comfort 67% Merino Wool, 11% Nylon, 20% Recycled Nylon, 1% Elastane, 1% Polyester Style: SW001646 Care Machine wash warm. Wash inside out. Do not bleach. Tumble dry low. Do not iron. Do not dry clean.