Type A: Tennis Training Tool Exercise Ball Sport Self-study Rebound Ball Trainer Baseboard Sparring Device
Features:
1. It can be loaded with sand, light, and durable.
2. Trainer base for use with rope nets.
4. With handle
5. With wire retracting groove
6. Automatic return ball

Description:
1. Unlimited by the venue, moderate amount of exercise, no need to frequently smash the ball.
2. Suitable for urban residents, the elderly in the community to exercise
3. Suitable for schools, entertainment venues, and youth entertainment or amateurs.

User Manual:
1. First, fill the base with sand and place it directly on the ground.
2. Then pick the other end of the rope tennis ball to the trainer
3. Throw the tennis ball up and hit the tennis ball from the bottom up 45 degrees with the net.