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. Sock Height: Crew. Our first sock construction, only now featuring recycled nylon . Elasticized arch brace for secure fit. Flat knit toe seam for additional comfort. 67% Merino Wool 8% Nylon 23% Recycled Nylon 1% Elastane 1% Polyester. Machine Wash Warm. Made in the USA.