The Merino Comfort Hiker is a midweight sock in a mid-crew height that will resist odor, doesn't shrink or itch, but will also provide a comfortable foot-hugging fit. Merino Wool Durable No Itch No Shrink Full Cushion Material: 62 percent Merino Wool, 34 percent Stretch Nylon, 2 percent Polyester, 2 percent Spandex