The Smartwool Men's Hike Classic Edition Full Cushion Crew Socks focus on comfort and durability, so you can go farther on every hike. Responsibly sourced, ZQ-certified Merino wool keeps things soft, while recycled nylon keeps it all sustainable. And full cushioning on the entire sock adds the warmth and protection you need and love. Stay cozy out there with the updated Classic Hike socks.FeaturesSock Height: CrewSmartwool's first sock construction, only now featuring recycled nylon (content varies by style)Flat knit toe seam for additional comfortElasticized arch brace for secure fitKnit in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% ElastaneSock Cushion: Full Cushion