Over 25 years ago, Smartwool invented the original Merino wool performance sock "the Classic Hike". The Smartwool Men's Classic Hike Light Cushion Crew Socks remains mostly unchanged and certainly unmatched in comfort. But, it's gotten an upgrade. And that upgrade starts with recycled nylon creating a more sustainable but just as comfortable sock. They're also made with responsibly sourced, ZQ-certified wool which ensures the best care of the Smartwool Merino sheep. These socks are a cozy, capable classic that is never going out of style.FeaturesElasticized arch brace for secure fitFlat knit toe seam for additional comfort56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane