Feature1: The waist band is elastic and it''s easy on and off, and can fit a variery of shapes and size. Satin covered waistband for added comfort.2: Layered ballet tutu with led lights, made of high quality materials, with vibrant colors, soft and comfortable to wear.3: The lights looks bright and awesome at night, and gives a great Illumination of the neon skirts.4: Two button cells included. The battery is with ON/OFF switch in a small plastic box at the waistband. The led lights last long.5: Eye-catching butterfly tutu skirt that won''t easily fall off ,Great for costume parties, holiday events, marathon runs, and more.6: Tutu Light mode: steady on , Powered by 2 x button batteries (included and replacement)7: Cat Headband : steady on and blinking. powered by 3 x button batteries (included and replacement)8: 3-layers skirt. Led are waterproof but the batterie not so you need to pay attention to the battery during the washing Specification for childrenTile Waist:38cm(can strech to 70cm) Skirt Length:About 28cm. one size fits for 2-7 years old children or fits for height 90-130cm.Specification for adultTile Waist:60cm(can strech to 110cm). Skirt Length:About 40cm. One size fits for adult