Over 25 years ago, Smartwool has invented the original Merino wool performance sock-the Classic Hike. The Classic Hike remains mostly unchanged and certainly unmatched in comfort. But today, it's getting upgraded. And that upgrade starts with recycled nylon-adding more sustainability to our favorite socks. They're also made with responsibly sourced, ZQ-certified wool that was grown with a focus on ensuring environmental, social, and economic sustainability while also taking the best care of our Merino sheep. This is a women's cozy, capable classic that is never going out of style.Sock Height: CrewOur first sock construction, only now featuring recycled nylon (content varies by style)Elasticized arch brace for secure fitFlat knit toe seam for additional comfort Knit in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% ElastaneStyle: SW010293BenefitsLight CushionLight cushioned for impact absorption and warmthMade in the USA Virtually Seamless(TM) ToeSmoothed out toe seams for ultimate in-shoe fit and comfor