3-Star 40mm Butterfly Plastic Professional Table Tennis Balls ( Pack of 3 )-Japanese Quality Plastic Ping Pong Ball, Tennis BallFeatures: Three durable 40 millimeter table tennis balls Perfect for competitive play High quality celluloid material Table Tennis Match Balls Butterfly Good Quality Seamless exterior with consistent bounce & roundness Plastic table tennis ball Professional table tennis balls The ball itself plays very similar to that of a traditional celluloid ball. Regulation size (40mm) Exact same thickness at all points Creates a very consistent bounce that can be