Features:One size fits most: The side of our sleep cap is designed with elastic band, which is soft and stretchable, so you don't have to worry about the size being unsuitable, ensuring more comfortable wearing experience, which is very important for a hat that is worn all day. Multiple usages: Our hair cover bonnet is suitable for indoor and outdoor activities, when worn at home, it can prevent hair from falling on the floor, also be applied as a hairband to fix the hair and prevent the hair from blocking the eyes. Specifications:Material: spandex outer layer, elastic bandSize: as pictures show Color: as pictures show Quantity: 4 pieces Package includes:4 x Satin lined sleep capNote: The colors may exist slight difference due to different screens.