The N-Ferno 6819BT Be Tenacious Beanie is a cold weather essential featuring an acrylic outer shell, a soft moisture wicking CoolMax liner and BeTenacious messaging. The outside of the stretchable winter hat is made of 100% acrylic and the interior is lined with a lightweight superior moisture wicking polyester for quick-drying comfort in all conditions. The snug fit keeps heat in when the temperature drops and provides a comfortable way to layer. It's the perfect thermal cap to wear underneath a helmet or a hood. Be ready for any outdoor excursion with this classic knit cap sized to fit most noggins small and large. It measures 8.5 high x 9.25 wide and is machine washable. Whether you're hitting the mountain, shoveling your driveway, going for a winter jog or working in cool-to-cold climates, this stylish beanie is sure to become a fall and winter staple.