Crafted from premium Merino wool, Cold Weather OTC Socks complement all 5.11 footwear. The over-the-calf length promotes support, and terry loop construction ensures warmth, while repelling cold. Integrated ankle and arch supports and heel, sole, and toe reinforcements enhance performance and durability, regardless of the environment. These socks are moisture-wicking and use odor control technology that inhibits the growth of odor-causing bacteria, so you'll stay warm, dry, and ready. Superior comfort, agility, and traction make these socks ideal for any mission and every day. Material: Merino Wool.