Description Our Hike Full Cushion Crew socks, formerly PhD® Outdoor, use cushioning on the entire sock to help maximize warmth and protection. These responsibly sourced, ZQ-certified Merino wool hike socks are built with our top sock tech, including Indestructawool™ technology for enhanced durability, our 4 Degree™ Elite Fit System for a dialed-in, performance-oriented fit, and our Virtually Seamless™ toe for maximum in-shoe/boot comfort. We've updated our hike line by improving mesh zones for additional breathability, as well as creating a new ply structure that reduces pilling while enhancing hand-feel and comfort. Not to mention, our best-feeling, best-fitting hiking socks are now made with recycled nylon—making these socks more sustainable than ever. Now that's something you can feel good in and about. Benefits 4 Degree™ Elite Fit System For a dialed, performance-oriented fit with flex zone at ankle joint Full Cushion Cushioning on the entire sock for added protection and warmth. Indestructawool™ Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort Made In The USA Virtually Seamless™ Toe Smoothed out toe seams for ultimate in-shoe fit and comfort Features Sock Height: Crew 4 Degree™ elite fit system for a dialed-in, performance-oriented fit Additional body-mapped mesh zones for added breathability Virtually Seamless™ toe for enhanced comfort Indestructawool™ technology with extended durability zones Comfort welt with 'stay put' fit Height 8" Made in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane Style: SW001618 Care Machine Wash Warm Gentle Cycle. Do Not Bleach Do Not Iron Do Not Dry Clean