Tennis Training Tool This professional tennis training machine will improve your response ability, predictability and hand eye coordination. Stable, fast, self study tennis, you can play with two or even more people. High Quality This tennis trainer ball is made of high quality material, sturdy and durable. Adjustable height make the swing training gear very convenient to use. Easy to Use The tennis ball trainer partner sparring device is convenient for training without the hassle of picking up the ball. Great tennis training equipment for practicing your tennis skills on your own. Floor tennis swing trainer, very convenient tennis training tool. A portable tennis trainer for topspin, stereotype, practice training, suitable f Specification: Material: PP Size Chart:67cm/26.38inch Package Includes:1 Tennis Trainer Note:Please allow slightly errors due to manual measurement and different monitors.