The big scrunchies has a strong elastic inside and smooth satin wrapped outside. So it will NOT leave marks on your hair even you use it for all night sleep. The scrunchies also work great on curly straight thick or thin hair. Good assistant for you. It is an essential piece for your daily hair accessories; Suitable for daily wearings and different occasions, such as sporting, parties, make up, ceremonies, office, school, travel and so on; These scrunchies of various color are suitable for any clothing; They are also good gift for girls. Scrunchies Hair Ties Satin Silk Accessories for Women- Elastic Cute No Damage Big Scrunchie Soft Ponytail Holders No Crease Stretchy Girls Scrunchies For Thick Curl Hair Bracelet Hair Tie