Smartwool&';s Hike Light Cushion Crew, formerly PhDA(R) Outdoor, is designed to help take care of your feet and elevate every hike. They&';ve updated their best hike socks to include more sustainable materials, improved durability, updated mesh zones, and an even more perfect fit. Their top sock technologies work together with responsibly sourced, ZQ-certified Merino wool to help you perform with natural fibers. Light cushioning along the entire bottom of the sock brings more comfort to your favorite hiking shoe or boot. Recycled nylon brings more sustainability to our Smartwool&';s sock construction and a crew height helps keep you covered as you set out on even the most rugged trails. Bring more comfort on every hike with Smartwool. Features Sock Height: Crew Additional body-mapped mesh zones for added breathability Virtually Seamless(TM) toe for enhanced comfort 4 Degree(TM) elite fit system for a dialed-in, performance-oriented fit Indestructawool(TM) 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