GOGO 144 Balls 3-Star Seamless Table Tennis Balls, Professional Ping Pong Balls Pack of 144 white table tennis balls; made from celluloid, lightweight, bouncy and durable 3 star ping pong balls, increased control, long lasting, and consistent bounce for precision play Measure 40mm in diameter, which is the regulation size used at official tournaments around the world Highly recommended for professional training, normal games or conventional competition, perfect to play by professional, beginner, and amateur tennis ball players Designed for table tennis, but also can be used for a fun night of party or drinking games such as beer pong, teaching tool and incentive for school, pet toys for fun and training, etc.