Featuring built-in LED light emits a bright and stable light, this product can allow you to easily recognize the badminton in the night sky when you are playing at night.Since it has design with its fine workmanship and good flexibility, this product can stably fly, and it is not easy to break, which can be used for a long time.Made of polystyrene styrofoam and plastic material, this product is wear-resistant and long lasting.The length of this product is 8cm, width is 6.5cm.It is suitable for sport, collection, daily using and so on.Item Name: Badminton ShuttlecocksMaterial: Plastic,Polystyrene StyrofoamBattery: 4 x Button Batteries(Included)Features: Long Lasting, Stable Flight, Good FlexibilitySize Details: 8cm x 6.5cm/3.15" x 2.56" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:4 x Button Batteries4 x Badminton Shuttlecocks