Tennis coach helps practical swinging machine for adult beginners children Description: [Tennis Coach Help]: floor tennis swing trainer, very convenient tool for tennis stroke training. Portable tennis coach for Topspin, stereotype, training, suitable for many places both indoor and outdoor, such as home, gym, garden, park, etc. [Tennis Training Tool]: This professional tennis training machine will improve your reaction ability, predictability and hand-eye coordination. Stable, fast tennis for self-study, you can play two or even more people. [Tennis swing stability]: the swing trajectory of this tennis trainer is very stable, swings back and forth, suitable for children, adults, older men, beginners and training constant movements. [High Quality]: This tennis trainer bounce ball is made of high quality material, strong and durable. The adjustable height makes the training swing very comfortable to use. [Easy to Use]: The tennis ball trainer sparring device is convenient for training without the hassle of lifting the ball. Great tennis training equipment to practice your tennis skills on your own. Specification: Material: str Size Chart: 67 cm/26,38 inch The package includes: 1 tennis coach