Sportly 3 Star 40mm Training Table Tennis Balls (White, 12) PERFECT SIZE FOR PLAY: These Table Tennis Balls measure at 40mm because we know that this size is excellent for playing your best game of table tennis. In the official tournaments this is the offical approved size for players to use. The size also allows for strategic advantages. PERFECT WEIGHT: Unlike other standard ping pong ball, our tennis balls are the perfect weight to play with. Our 3 star ping pong balls beat the standard ones in playing well because their weight is perfect for play by both professional and amateur table tennis ball players. GREAT BOUNCE, POWER AND SPIN: All SportzGo 40mm Tennis Table Balls are outfitted with an excellent bounce power. With this powerful bounce you can have a consistent volley. These balls also have great spin capabilities so you can rest assured that when you are playing you can spin those balls right around back at your opponent! 12 PACK SET: This set features 12 Tennis Balls in the color white. These pingpong balls are easy to spot, easy to clean and being sold at a great value. You will not find any higher quality tennis balls sold in a set of 12 at this price except by SportzGo ! 100% SATISACTION GUARANTEED: SportzGo guarantees that all our items are approved and of excellent quality. We strive to satisfy all our customers with our amazing products at amazing prices. You will love all things SportzGo makes.