SmartWool's everyday boot sock has just enough cushioning to keep your feet comfy throughout the day. . Made from pure merino wool, nylon, and elastane. Medium cushion under the foot for extra comfort. SmartWool delivers soft, itch-free comfort, even foot temperature, moisture management, and odor control. WOW (wool on wool) Technology adds more wool in high-impact and high-wear areas to reduce shock and abrasionoffers more comfort and longer lasting merino wool benefits. Knee-high height. Machine wash warm inside out, gentle cycle; tumble dry low or line dry. 605284287538 23598200022 SW0SW568