Material and Protection Made of quality waterproof polyester fabric with a white bottom coating. It is waterproof, dustproof, oilresistant, odorless, ecofriendly, skinfriendly, and breathable. Effectively prevents hair from getting wet during showers or baths, helping hair stay dry and clean. Secure Fit for Most Women Outer diameter about 11 inches (28 cm); inner diameter about 5 inches (12.7 cm). Features a quality elastic band with strong elasticity and durability to fit most women's head sizes and prevent slipping. AllPurpose Uses Reusable waterproof shower cap suitable for showering, cooking, household cleaning, and spa sessions; protects hair from dust and cooking fumes. Also suitable for makeup, face washing, and applying facial masks; works for all hair types—long, curly, voluminous, or short. Lightweight and Travel Ready Lightweight and folds into a compact piece for easy storage and portability. Ideal for hotel stays and travel; protects hair from getting wet or damaged during showers and helps keep your hairstyle smooth and tidy while sleeping. Usage scenarios In the shower or bath to keep hair dry and clean. During makeup, facial cleansing, or applying facial masks to keep hair away from products. While cooking, cleaning, or enjoying spa sessions; also convenient for travel or hotel use to protect and manage hair on the go.