Dimensions: 27 cm diameter. Design and Material – This shower cap features two layers: the outer layer is made of polyester cotton, offering a pleasant texture and soft feel; the inner layer is made of PEVA material, which is waterproof and durable, providing a smooth and comfortable experience. High Elasticity – The cap features a sewn-in soft elastic band, making it easy and comfortable to put on and take off. Use it to keep your hair dry while showering, washing your face, or protect your expensive hairstyle while sleeping. Comfortable for most head sizes and all hair lengths and thicknesses. Multifunctional Caps – Use these shower caps to keep your hair dry while bathing, cooking, at the spa, or cleaning the house and yard. They can also be used to keep your hair out of the way while applying makeup, washing your face, or getting dressed. Easy to Carry – When traveling, you don't need to worry about your hair. It folds into a very small size, making it lightweight and easy to store in luggage or a backpack. The cap is reusable and can be cleaned for repeated use. Easy to Clean – 1. Hand wash: Rinse directly with detergent and hang to dry. 2. Machine wash: Simply toss it in the washing machine and hang to dry. Note: Do not hang dry in direct sunlight.