As Mammut's best-selling beanie, you'll find the Tweak Cap warming heads from the frozen icefalls of Ouray to the boulders of Switzerland. Made with a soft wool-acrylic blend, the Tweak is a versatile insulator for any cold day of climbing. Material: [face fabric] 50% acrylic, 50% wool, [lining] 100% polyester Activity: all-mountain skiing, all-mountain snowboarding, backcountry skiing, backcountry snowboarding, casual, freeride/powder skiing, freeride/powder snowboarding, park & freestyle skiing, park & freestyle snowboarding Manufacturer Warranty: 2 years