SKU 9882137 The primary materials that compose this product contain a minimum of 20 percent recycled content. Enjoy comfort and performance together by wearing Smartwool® Snowboard Targeted Cushion Stripe Extra Stretch Over the Calf socks. Indestructawool™ technology with extended durability zones. 4 Degree™ elite fit system for a dialed-in, performance-oriented fit. Shred Shield™ technology reduces wear from toes. Extra stretch calf for greater comfort that accommodates fuller calves. Wider welt for secure fit and comfort. Body-mapped mesh zones for added breathability. 60% merino wool, 11% nylon, 27% recycled nylon, 2% elastane. Machine wash warm, tumble dry low. Made in the USA. View Zappos.com Glossary of Terms Smartwool Snowboard Targeted Cushion Stripe Extra Stretch Over the Calf