Smartwool's thickest, warmest sock, the Classic Mountaineer is designed for long-distance hiking. With an elasticized arch brace for a secure fit, these cozy socks are sure to keep your feet comfortable, no matter how long the hike.

Features

• Extra cushion provides maximum full sock cushioning
• Flat knit toe seam for additional comfort
• Elasticized arch band for secure fit

Sizing

• Medium fits men's shoe size 6-8.5, and women's shoe size 7-9.5.
• Large fits men's shoe size 9-11.5, and women's shoe size 10-12.5.
• X-Large fits men's shoe size 12-14.5, and women's shoe size 13 . 

Material contents: 54% merino wool, 31% recycled nylon, 12% nylon, 3% elastane.

Care instructions: Machine wash warm, inside-out. Do not bleach. Tumble dry low. Do not iron.