yotijar Tennis Trainer Ball Tennis Practice er for Kids Adults Indoor with 2 balls

[Design]The tennis trainer facilitates attaching tennis balls, and the recessed part is used to place balls. size 19.5cmx19cm/7.68inchx7.48inch. [Perfect Gift]Tennis Trainer Ball Set is also a great gift for families and friends on birthdays, holidays festivals, etc. [Easy to Use]Fill the base with sand or water. No ball machine or walls are required; nonslip base for indoor and outdoor practice. [Professional Tennis Training Equipment]Tennis trainer for building speed, hand eye coordination, and stamina. Improve your concentration and physical abilities. Easy to use and train. [Quality Material]Tennis is made of high quality pp material, eco friendly and lightweight, sturdy and durable, and can be used for a long time. Specification:Material: ppSize: 19.5cmx19cm/7.68inchx7.48inchPackage Includes:1 Tennis Trainer 2 BallsNote:Please allow slightly errors due to manual measurement and different monitors.