Tennis balls are divided into balls and blankets. The balls are made of rubber. The wool content of the game ball felt is very high, while the wool content of the training ball felt is not high. Also, the game ball is full of air pressure. It will run out of gas after playing for a period of time. It is not very durable.

The ball used in the match is yellow and made of rubber compound. The surface is evenly covered with wool fiber. There is no seam at the seam. The diameter of the ball is 6.35-6.67 cm, and the weight is 56.7-58.5 g.