The warmest and tallest sock in the line, the Extreme Cold Weather/Mountaineering over-the-calf sock is designed for extreme climate on rugged terrain. Featuring full terry loop cushioning throughout for maximum warmth. Elastic support at arch. Reinforced heel and toe for increased durability.

Features of Darn Tough Over-the-Calf Heavyweight Tactical Socks with Full Cushion

• Materials: 79% Merino Wool 20% Nylon 1% Lycra Spandex
• USAF Safe to Fly Certified and NAVAIR SOA Approved
• Tactical over the calf socks average 17 in. from heel to cuff - expect them to cover the leg to just below the knee
• A performance fit means no slipping, no bunching, no blisters - so you can focus on your mission and not your feet
• Berry Amendment compliant tactical socks are knit with Merino Wool that's raised, sourced, and produced in the USA
• Arch support alleviates foot fatigue, reduces bunching, and helps socks last longer
• A military-grade fiber, Merino Wool protects foot health and is ultra-durable in the toughest conditions
• Heavyweight socks hold heat and are breathable and padded for full protection in cold weather
• The “still” in Still Made in Vermont, USA is personal
• These full cushion socks are Darn Tough’s warmest, most padded Tactical socks