Advanced Materials1 x Trainer Base + 2 Tennis Rackets. The base of the tennis trainer is best from advanced materials, it is very distinct and rectangular. The tennis rebound ball is made of chemical fiber, has strong rebound and is very elastic. The shape of the giraffe's head is similar to the antlers, and it is very long. The tennis jump ball has its own unique tennis training methods and techniques.Overview and How to Use: The base of the tennis training set is Lochdesign. Simply connect the rubber stopper to the tennis trainer ring to start individual tennis training. Before filling with water and sand, the tennis trainer will be simple and easy to train. You can use the tennis trainer to simply start training with personal training in rainy weather.Basic Design: This is a weathervane, which requires a stable design to improve stability. The special water entry and exit design, by filling the training device with water or sand and installing it close to the back in the position below will improve the stability of the trainer base. The ball racket design fits the tennis perfectly.Tennis Self-Training: Self-rebounding tennis is the most suitable item for personal tennis training. You must concentrate, move and manually measure coordination. Simple and practical. Of course, you can also learn in your own tennis knowledge.