JHT Tennis Trainer Rebound Ball, Solo Tennis Training Equipment for Self-Pracitce, Portable Tennis Training Tool, Tennis Rebounder Kit, Including 2 String Balls, Suitable for Beginners Sport Exercise.

Product size: 8. 07x7. 87x1. 96 inch Product weight: about 220g Package Include：2 tennis ball2 black rubber band1 tennis training device How to use: 1. Fill the base with sufficient water or sand 2. Tie the tennis ball with string to the base (antiwrap hook3. Hit the ball 45 degrees upwards to prevent the tennis ball from being pulled back to the ground by the elastic rope。.