Features:1. The base is made of quality plastic, sturdy and durable, the bonus rubber rope is highly elastic and wearable.2. The base has a valve compatible with putting sand or water into it to increase the weight so as to provide stable support compatible with training.3. The small ring on the side is compatible with hanging band, and the concave part compatible with placing tennis ball.4. Easy to use and convenient compatible with training without picking ball, lightweight and portable, suitable compatible with many places like garden, park, etc.5. Great accessory compatible with tennis training, can help to perfect skills of tennis.Specification:Material: Plastic + RubberColor: BlueBase Size: approx.15 * 20 * 5 cm / 5.9 * 7.87 * 1.96 inchBall Seat Size (Dia): approx. 6.3 cm / 2.48 inchElastic compatible withce of Ball: approx. 1.2 m / 3.39 ftElastic compatible withce of Bandage: 4 - 8 m / 13.12 - 26.24 ftWeight: approx. 270 gPackage List:1 * Tennis Trainer Base1 * Ball with Rope