Features: Brand New & High Quality Official table tennis ball 3 stars quality of bounce 40mm pingpong balls' consistent weight Good for traning， very tough & Durable Suitable for both recreational and advanced players Offer a very good feeling when you hit the ball !!!Specification: Type: 3 stars training balls Size: 40mm Weight: 2g/piece approx. Material: Durable plasticPakage included: 25 x Ping Pong Balls (White) 25 x Ping Pong Balls (Yellow)