Features This tennis trainer is lightweight, convenient, practical, easy to use, and can provide stable training support, contributing to single-player exercises. It can also improve your attention, athletic ability, and hand-eye coordination, and develop your interest in sports. The detachable elastic band can be tied on the heavy objects or directly tied on the triangular area of the racket. So you can use it to do the practice simply and conveniently. The tennis trainer consists of a base, an elastic rubber rope and a tennis ball and a tennis racket. Hit the ball and the ball would rebound under the action of the elastic rope so that you can play the tennis solo. The base comes with the rubber lid that allows you to place the sand or water inside it to add the weight, make it stable. The small ring aside can help you tie the string, while the concave part can place the tennis ball. It is suitable for various people, especially for beginners. Specifications Material: Aluminum split AND Carbon tennis racket Color: Blue Style: for kids/adults Size: 21*54cm(kids)/28*67cm(adults) Gross Weight: 0.300kg(kids)/0.26kg(adults) Suitable for: suitable for students, amateur junior and intermediate training players. Propulsion Deformation:0.20-0.25N Packaged: 1 * Tennis Trainer(Including 1* tennis racket, 1*tennis base, 1*tennis ball) Notes Please allow slight dimension difference due to different manual measurement. Due to the light and screen difference, the item's color may be slightly different from the pictures. Dear Friend! You may find that someone sells at a lower price than us but they cannot guarantee the same quality and service as we do. Let us exchange feedbacks! Kindly leave us positive feedback 5 star if your are satisfied with our product. Please contact us before leaving negative feedback as we will gladly settle and discuss it properly whatever your concerns are. Give us the opportunity to resolve Unexpected problems and issues that may arise. Good relationship with the customers is one of our main goal.