Great Stretchy Ability: The outer diameter is about 12 cm/ 4.72 inches, with good elasticity, they fit most girls' hairs. 9 Pack of Different Colors: Assorted hair scrunchies, you can match them with different outfits and styles for various occasions. 3 Light Modes: Fast flash, slow flash, and constant light. Easily remove the plastic sheet inside the hair scrunchies from the outside of the satin hair scrunchies, then find the button and press it. Built-in LED Light: The lighs make you the most attractive one in the crowd, especially at night. Suitable for Halloween, Christmas Party and so on. Top Grade Satin: Made of premium fabric, which is soft and comfortable. Durable rubber band inside, stretchable and elastic durable, can fix your hair well and will not hurt your hair.