Featuring all the attributes of the Medium weight USAF certified Safe to Fly cold weather sock, this heavy weight version boasts 82% Merino Wool and full cushioning, providing the ultimate in warmth, comfort and safety. Also Made in USA and 100% Berry Compliant you can count on these socks to stand up to the harshest of environments.

• Unisex fit
• URfit® System provides arch support and memory-knit construction
• Cushioned sole absorbs shocks and insulates
• Multi-filament yarn construction makes it very abrasion resistant and adds durability
• Smooth, flat comfort toe seam
• 82% Merino Wool, 11% Nylon, 5% Nanonglide® Nylon, 2% Spandex
• Style #6065