Hair bonnets are protective caps that help to extend the life of protective hairstyles, fight frizz, and retain moisture while you get your sleep. Made with 100 percent mulberry silk, and features an elastic band to help stay put all night. This pure silk bonnet from LILYSILK doesn't just feel luxurious — it also looks sophisticated and chic. It's time to unlock the secret to effortlessly beautiful hair with our game-changing sleep cap.