Huanlemai 3-Star Tournament Table Tennis Ball Ping Pong Balls, (6-Pack) Superior Quality for Tournament PlayOffers Superior Bounce, Spin, and Control. Tournament quality, good lifespan,Long-lasting. Don't easily break. Perfectly balanced. 40mm ITTF Regulation Size and Weight,Durable, High Bouncing Balls. These balls produce an even bounce and spin, last longer and are more fun to play with as compared to 1-star balls. More advanced players will appreciate the pronounced spin and faster volley action.