Feature 1Durable Material: These training tennis balls adopt premium chemical fiber and rubber material for consistent feel and reduced shock. 2Wide Application: These practice tennis balls can not only be a great tool for a pro tennis teacher, but also great for family fun and playing catch with your pets, lessons and practice. 33 Pieces: You will receive 3 pieces of beginner tennis balls in total, meeting your basic needs for practice, lessons and games. 4Indoor or Outdoor: These dog playing balls are most suitable for soft court, but they are also available on hard court indoor and outdoor. 5Ideal Gift: These tennis balls with diameter of 2.6in are ideal gift for kids, teachers, students and family.Item Type: Training Tennis BallsMaterial: Chemical Fiber, RubberDiameter: Approx. 6.5cm / 2.6in ( Manual Measurement, Slight Error May Exist ) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List3 x Training Tennis Balls