Size: Adult, One Size fits most. Also fits Juniors and Teens; Dimensions - 10.5"(w) X 7.5"(h); Weight - 2.5 oz. Midweight Chelonia 150 Fleece - 100% Polyester, Double-layered at Ears Machine Wash Cool, Tumble Dry No Heat Soft and Warm Multi-Season Fleece Perfect for skiing, snowboarding, snowshoeing, running, hiking and many more outdoor activities. The Chelonia 150™ beanie is designed to hug your head in warmth and softness. Comprised of our soft and warm water-resistant, midweight fleece, this beanie holds on to just enough heat without making you sweat through outdoor activities. Designed to fit comfortably under hats and helmets, this UPF 50+ Sun Protective fabric also stands up to light wind and spray without weighing you down (and keeps ears toasty, too!)