1. Head circumference 21.6–23.6 inches, suitable for both men and women. 2. Made of cotton and thermal fleece for effective cold protection and warmth. 3. Thick fleece-lined ear flaps and neck cover for added comfort in winter. 4. Adjustable chin strap ensures a secure and comfortable for a warmer fit. 5. The ear flaps can be fastened up or down, allow to be worn in many different ways. 6. Ideal for skiing, snowboarding, motorcycling, and everyday cold-weather use.