Description: Material: These tennis balls are made from rubber, covered with felt, which is comfortable and stable in hand and can effectively reduce the impact.Feature: Each ball has a diameter of about 6.5cm/2.56inch, providing high elastic, resistant to hit, and not easy to deformation.Colorful Variety: The set includes 6 bright colors, adding fun to your training sessions.Wide Application: These Training Balls are nice for various scenarios such as tennis sports, outdoor training exercises, tennis games, competitions, etc. They can also be used as interactive toy balls for playing with dogs.Ideal Gift: This set of Tennis Balls makes a great gift for your family members or friends who love playing tennis. Specification: Material: Rubber Size Chart: Ball Diameter: 6.5cm/2.56inch Package Includes: 6 Tennis Balls Note: Please allow slightly errors 1-2cm differences due to manual measurement.