Foot Soldiers**Engineered for Military Use*** Cold Weather Over the Calf Boot Sock A special blend of fibers were used to insulate your feet while the heavy duty construction ensures that they are built to last Thick cushioned heel pad and toe for absorption of high impacts A special blend of Wool, acrylic and nylon fight friction that can cause blisters Advantage Moisture Transport – wicks moisture away from your feet Mesh vents accelerate moisture release to the outside of the sock which aids helping your feet to stay warm and dry A mixture of Spandex and Nylon threads ensure that these socks stay up and active as long as you do. Silver coated PET fiber technology prevents foot fungus, infections and neutralizes odor causing microbes so your socks stay fresher longer Trade Agreements Act TAA / GSA Compliant Available in Small, Medium, Large and XL. Call 800-853-8506 for GSA pricing or click the GSA logo to order on GSA Advantage! GSA Contract: 47QSWA22D009S