NIVEOLI Tennis Trainer Rebound Balls Tennis Training Equipment with Rope and Anti-slide Trainer Baseboard Anti-tangle String Tennis Practice Equipment for Solo Training Adult Kids Player Beginner

I bought it for a 16-year-old boy who wanted to train tennis, to train for his tennis team.Let me tell you, it's worth it.He probably goes out and USES it more than five times a day because this tennis training kit is so handy that he only USES it for 15 minutes.He didn't need to go to the tennis court or find a partner.He's still practicing and he's very active.