SKU 9778095 The primary materials that compose this product contain a minimum of 20 percent recycled content. Keep the cold at bay as you set out for those cold weather hikes and treks wearing the Smartwool® Ski Full Cushion Over-the-Calf Socks. 4-Degree™ Elite Fit System construction uses two elastics to provide better stretch and to keep your sock in place. Indestructawool™ is engineered to provide maximum comfort and durability. Virtually Seamless™ toe is designed for all-day comfort and to minimize chafing. Merino fibers provide outstanding softness and construction. Mesh panels on the out step help provide added breathability. Wider welt for a secure and comfortable fit. Fully cushioned. 63% Merino wool, 25% recycled nylon, 10% nylon, 2% elastane. Machine wash, tumble dry. Made in the USA. View Zappos.com Glossary of Terms Smartwool Ski Full Cushion Over-the-Calf Socks