One Size Fits Most: Designed to comfortably fit a range of head sizes with a flexible stretch Head measurement: 57 cm. , 22-3/8", Size 7-1/8 Breathable and Soft Thick Knit: Super soft materials provide a cozy, warm layer while allowing your head to breathe Winter Wardrobe Essential: A stylish and practical addition to your cold-weather gear, perfect for staying warm and fashionable Perfect for Outdoor Fun and Cozy Relaxation: Perfect for skiing, hiking, snowboarding, ice skating, running, or simply sipping coffee and relaxing with friends. Offers warmth and comfort for all your winter needs Great for any outdoor activities,skiing, snowboarding, camping