- Cordura® reinforcements at the heel and toe box reduce stress on wear points and extend the life of the sock

- Merino wool blend regulates temperature and maintains warmth when wet

- Woven with PrimaLoft® yarns for more warmth with less bulk

- Cushioned for comfort over rugged terrain

- Built-in performance zones throughout the sock optimize warmth, cushioning, and breathability, while minimizing bulk

- Anti-twist band in the mid-foot keeps the sock in place to reduce bunching