Specifically engineered to deliver the maximum protection and comfort for any mountaineer prone to blisters, foot pain, or discomfort. Unique padding specifically designed for mountaineering in sub zero weather. 100% wool toe for maximum warmth, and low profile toe seam won’t rub or irritate feet. Constructed with THOR•LON® blended with thermal fibers for extra insulation, superior softness, resilience, durability and moisture-wicking. Cushioned instep and arch for a better fit, more support and less pressure on the feet for a more comfort. Fiber content: 60 % worsted wool, 26% THOR•LON® acrylic, 12% nylon, 2 % elastic. Made in the USA.