The sleeping is made of polyester material for durable and long term use. There are many of sleeping cap, it can protect kids hair, keep kids hair neat. Besides, the bonnet has a very good air permeability, can be friendly with hair contacts before the first use can be cleaned, it will be more comfortable to use. Features - Color: Green, , pink bows, dolphin pink. - Material: Polyester - Size: 27.00X27.00X1.00cm/10.61X10.61X0.39in. - Made of high-end materials, durable and safe, can be used for daily cleaning and sleep. - Lightweight and easy to carry. Foldable for storage. Flexible design, suitable for most children's size. - Printed design, comfortable for children to wear, patterns. - Comfortable and breathable, suitable for home, sleep or face washing. - It can be used for babies to sleep and bathe. It can prevent hair from becoming clutter and wet. Package list: 4 x sleeping hats