Live Ultralight Members Get 10% Off + a 10% Rebate As Store Credit Immediately After Purchasing This Item! Sign Up or Log In To Your Membership Account Here Our Extreme Cold Weather/Mountaineering boot sock designed for extreme cold climates or rugged terrain. This is our warmest sock, featuring full terry loop cushioning throughout for maximum warmth. Elastic support at arch. Reinforced heel and toe for increased durability. Height: BootWeight: HeavyweightPair with: Hiking boots, tactical boots, military combat bootsMaterials: 80% Merino Wool, 18% Nylon, 2% Lycra SpandexCushion: Yes Details Tactical boot socks average 11 in. from heel to cuff - expect them to rise just to the top of a basic 8 in. military combat boot. 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. We close every toe seam using our True Seamless(TM) Toe technology for an ultra smooth, undetectable feel. 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. Care Machine wash in warm water on gentle cycle with socks inside-out. Do not bleach. Tumble dry on low or hang dry. Do not dry clean. Darn Tough Unconditional Lifetime Guarantee Sizing Sock Size Shoe Size Men Men US Women US EU UK M 8 - 9.5 10 - 11.5 41 - 42.5 7.5 - 9 L 10 - 12 12 - 14 43 - 45.5 9.5 - 11.5 XL 12.5 - 14.5 - 46 - 49.5 12 - 14