Heavy in weight but light on your feet, this Tactical 3-pack is built to last. American-made in the foothills of Vermont, our Merino Wool Boot socks offer staunch support for when the going gets tough—which is often. Soft, supportive, and supremely durable, your feet (and your boots) will thank you for your service. USAF Safe to Fly Certified and NAVAIR SOA Approved.