Keep your toes toasty on the slopes with these Columbia Omni-Heat Ski - Optical Grid 1-Pack of socks. Over the calf socks. Sold as one-pair pack. Omni-Heat insulation Synthetic polyfill retains and disperses the bodys warmth. Lightweight, low-loft design reduces unwanted bulk. Self-adjusting welt cuff keeps your socks from falling down as the day goes on. Cushioning in critical zones help provide comfort with minimal bulk. 51 percent Merino wool, 25 percent polyester, 23 percent nylon, 1 percent spandex. Machine wash, dry flat. Imported.