Hikeen Premium Tennis Trainer Rebound with Metal Base,Portable Solo Tennis Trainer Set with 3 Highly Elastic String Balls,Tennis Practice Equipment for Adult Kids an Beginners

[DURABLE METAL BASE]: Hikeen tennis trainer rebound upgraded with a sturdy base, its own weight and rubberized grip on the bottom increase the friction with the ground, and stay stable on the ground during intense strokes. Ready to use right out of the box, no need to fill it with water or sand for every training session, no worries about leakage, thus keeping your hands clean and simplifying carrying and use-Patent pending
[3 HIGH QUALITY TENNIS TENNIS BALLS]: The tennis balls are 30% more highly elastic and abrasion-resistant than the basics, made of high-quality felt and thickened natural rubber core, which provides excellent elasticity and durability, distinguishing them from being more prone to breakage than ordinary tennis balls, which allows you to use the tennis balls for a long period of time without having to worry about them getting damaged
[Abrasion Resistant Stretch Cord]: Equipped with 13 feet (4M) abrasion resistant stretch cord, its abrasion resistance can withstand high-intensity tennis training, no need to worry about the tennis ball damage or broken strings, which can bring a more realistic hitting experience, the portable tennis trainer set has a ring groove, you can place the tennis ball and place the stretch cord when you are not playing, which avoids the trouble of tangling and tying