Fox River Old Glory Medium Weight Over-the-Calf Ski and Snowboard Sock USA Flag Medium MD. Fox River's exclusive Wick Dry technology moves moisture away from your skin to keep feet dry while full cushioning absorbs shocks and insulates. The URfit System makes these great for boarding or those who prefer a little extra cushion. The full cushion throughout the sock as well as the smooth flat comfort toe seam provide all-day comfort. And the reinforced toe and heel aids durability and lengthens sock life. 37percent Merino wool 37percent acrylic 24percent nylon 2percent spandex Specifications for Fox River Old Glory Medium Weight Over-the-Calf Ski and Snowboard Sock: Manufacturer: Fox River Quantity: 1 Package Contents: Fox River Old Glory Ski Fox River 5820-9008 MD: Old Glory Medium Weight Over-the-Calf Ski and Snowboard Sock USA Flag Medium