Description: With elastic band and stretchable quality, you can put it on your head easily and keep your hair in place. After buying this product, you can prevent loose hair during sleep and protect curly hair. Made of high quality polyester, it is durable to use. The diameter of the hat is 42cm. It is suitable for hair decoration, daily wearing and sleeping. Item Name: Night Sleep Cap Material:Polyester Crowd: Female Size:42cmx42cmx0.5cm/16.54inx16.54inx0.2in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Night Sleep Cap