Crafted from genuine Merino wool for unmatched comfort and warmth, the Cold Weather Crew Sock was specifically engineered to complement 5.11 Tactical footwear. Terry loop construction at the calf and ankle hold in warmth and repel cold and enhanced arch and ankle support maximize agility, traction and comfort across any terrain. Moisture wicking action and an anti-microbial treatment keep your feet dry and flexible, while reinforced heel, sole and toe sections ensure that these premium quality crew socks will provide peak performance, mission after mission.