Merino Wool Blend Thermal Socks are essential cold weather winter gear. Made of 20% Merino Wool, 35% Cotton, 35% Polyester, 5% Acrylic and 5% Spandex they're perfect for frigid conditions but breathable and durable for every day use. These winter socks are designed to keep your feet warm and dry all day long. High performance socks offer arch support for extended comfort during every activity, whether you're playing outside in the winter, hiking, skating, or skiing. Designed as a perfect boot socks, these woolen thermals will stay in place, no matter how long your hike might take.