Smartwool's hike Full Cushion Crew socks 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, 4 Degree™ Elite Fit System for a dialed-in, performance-oriented fit, and Virtually Seamless™ toe for maximum in-shoe/boot comfort. Smartwool have updated their 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, the best-feeling, best-fitting hiking socks are now made with recycled nylon—making these socks more sustainable than ever. Indestructawool™ technology with extended durability zones 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 Comfort welt with 'stay put' fit Formerly known as PhD® Outdoor Weight: 0.116 kgsCountry of Manufacture: Italy Composition: 61% Wool, 37% Nylon, 2% Elastane Care Instructions: Wash inside out Machine wash cold or warm Gentle or delicate cycle Tumble dry on low heat Do not bleach Do not dry clean Tumble dry low Do not iron Non bio detergent No fabric softener Smartwool Men's Performance Hike Full Cushion Crew Socks Black 001 SW001614