1: Quality MaterialNylon spring material and high pressure foam ball joint are moderately heavy and easy to control, but also reduce the risk of arm injuries 2: Light color: These light color shuttlecocks, which can help you improve your hand-eye coordination, are highly visible in the sky, which makes your sport more fun and makes it easier to see the position and the ball caught while you play 3: Durability: Strong adhesive makes the frame strong and ensures that the spring and head are not easily broken. High quality springs and sturdy structure ensure continuous play and keep the ball for a long time 4: You can use them by turning on the switch, day or night, you can play badminton 5: ScopeBadminton Balls