Made for high-altitude, low-temperature excursions, the Mountaineering Extra Heavy Crew sock by Smartwool is the top choice for mountaineering, ice climbing, or peak bagging in the snow.
• SmartWool® Fit System: Ankle and arch braces provide a secure fit
• Extra Heavy Cushion: The ultimate in impact absorption and warmth for mountaineering expeditions
• Sizing clearly indicated on the sock
• Flat knit toe seam
• Made in USA of Imported Yarn: 74% Merino Wool, 25% Nylon, 1% Elastane