HIGH STRETCHY ELASTIC. This satin bonnet is made with ultra-thin and high stretchy elastic, which makes this sleep hat stay on your head all night even if you toss and turn a lot. We hate headaches as much as you do. Our designers have tested thousands of elastic, and eventually select this elastic. You can feel super comfortable with it when sleeping. | CUSTOMIZED SLEEP HAT FOR GIRLS FROM 8 TO 16 YEARS OLD. Suitable for children with long hair or curly hair. Silky satin fabric is quite breathable and soft. So kids won’t feel it burdensome. The satin bonnet also keeps hair from knotting. Hair knotting is still a problem for you and your kids? BUY IT NOW. | CLASSY BAMBOO FIBER. Bamboo Fiber is fabricated from natural bamboo that is more breathable and softer than cotton. This kind of superior quality bamboo fiber is used at the band of hat, outside of the elastic band. | HAIR CARE. Worry that cotton hat may suck the moisture out of your hair? This satin sleep hat can protect hair maximally. It keeps hair from knotting. It also can seal moisture of hair and increase brilliant shine. Besides, the hat will keep protective oil off the pillow and keep your bed neat and clean as well. | QUALITY GUARANTEE. High quality and 100% satisfaction. If you are not satisfied with this satin bonnet or have any questions, please be sure to contact us. 30-DAY MONEY REFUND GUARANTEE.