The elastic reinforcement at the arch of the Classic Hike Full Cushion Solid Crew sock guarantees a secure fit while hiking. But you'll love even more about this classic sock. You'll also love the flat knit toe seam for more comfort in the shoe, as well as the extended durability thanks to sustainable, recycled nylons. And the best part of this sock is that it's made from responsibly sourced, incredibly soft, ZQ certified merino wool. These socks will keep your feet feeling great throughout your hiking adventure. Weight: 96 g Composition: 67% Merino Wool 8% Nylon 23% Recycled Nylon 1% Elastane 1% Polyester.