Killerspin 4-star 40+ ping pong balls are simply the best on the market. These ping pong balls are built with ABS plastic to keep up with the new competition tournament standards and are the best choice for durability and getting true bounce. Each ball is tested and held to the highest standards of quality, durability and performance. The table tennis balls are specially designed so that you get maximum spin, speed, and performance during games. Killerspin 4-star 40+ ping pong balls are slightly bigger than the standard 40 mm table tennis balls and help you to get a better experience during your ping pong games. These ping pong balls are the perfect gift along with Killerspin table tennis paddles for anybody wanting to get started with ping pong and learn the game.