Specification for skirt Tile Waist:38cm(can strech to 70cm) .Skirt Length:About 28cm .One size fits for 2-8 years old children. Powered by 2 x button batteries (included and replacement) . Light mode: Burn on . Each skirt has 12 butterfly on it. 3-layers skirt. Note: If the weight of 7-8 years girl is fatter, the skirt may be smaller. Suitable for normal 2-8 body weight. please check the waistline Specification for DIY hair LED lights string. With this hair LED lights string, you can DIY any hair style . Length: about 50cm . Powered by butoon batteries (included and replacement) . Light mode: quick-blinking , slow- blinking , steady on , off Specification for headband and elastic hair rope Light mode: quick-blinking , slow- blinking , steady on , off . Batteries included . Ready to use Note: There is a battery box inside hair rope. There is an insulating sheet on the battery box, pull out the insulating sheet, and then press the switch to on /off . Switch just on the battery box which can be easily touched by hand