Made of 100% natural silk, Olesilk sleep cap is a good way to pamper your hair while sleeping. Beautiful silk sewn with French seams. The natural fiber band is comfortable. The ties are nice and stretchy, when you tie your sleep cap adjust to fit your own comfort level.Sleeping on smooth silk fabric aids in hair growth because it helps to reduce the friction between your hair and your pillowcase. Our sleep caps will also help prevent the dreaded bed head, and allows your beloved hairstyle to glide over the pillow and not get all matted up.