20/50/100pcs Huieson 3 Star Table Tennis Balls 40mm 2.9g Ping Pong Ball White Yellow For School Club Table Tennis Training - Table Tennis Balls - AliExpress
Amazon.com : Franklin Sports Ping Pong Balls - Official Size + Weight White 40mm Table Tennis Balls - One Star Professional - Durable High Performance Ping Pong Balls - White - 12 Pack : Sports & Outdoors