The SmartWool Mountaineering Extra Heavy Crew Socks feature a greater volume of wool for enhanced comfort, greater cushioning and comfort and lasting effectiveness over greater distances.

The socks feature a 4 Degree Fit system for an exceptional secure ride.

Higher-density wool has been placed in high-impact areas along with WOW Technology for added protection and durability.

Flat-knit seaming across the toe offers a smooth fit, increasing your comfort and preventing the risk of chafing and blistering.