[Adjustable Clasp]The elastic band of this sleeping bonnets is located at the back of the head, reducing the chances of the bonnets slipping off during sleep and preventing any lines or marks on the face. The adjustable elastic clasp is simple yet intelligent, suitable for head circumferences of 20.9-24.5". [Protect Your Hair]Silk satin material, soft and comfortable, provides you with a top-notch sleeping experience. Breathable design allows your hair to breathe during sleep, avoiding scalp overheating and greasy hair. Effectively reduces friction between hair and pillow during sleep, minimizing hair curling and tangling issues. Helps maintain hair moisture, preventing dryness and breakage. Suitable for curly hair, natural hair, straight hair, braids, and other types of hair. [Usage Scenarios]Sleeping: Prevents your hair from being flattened by your partner and reduces facial marks caused by wearing a CPAP. It can also be worn during picnics, face washing, applying face masks, after essential oil maintenance, makeup removal, doing household chores, and on windy days to prevent hair from getting on your face. During baby-carrying, it can effectively prevent the child from grabbing your hair. [Other Advantages]Beautiful design, with a royal luxurious style, wearing this bonnet will make you feel confident and beautiful like a queen from ancient times. The double-layered bonnet enhances hair protection. It is colorfast and will not stain pillows or bed sheets. Suitable for women of most age groups. Suitable for wearing throughout the year.