Features: Suitable for beginners who want to self-study tennis skills. It provides an independent platform for training without relying on others. The rope made form high elastic materials ensures a more realistic Rebounds effect of ball and provides sufficient challenges. By continuously using this trainer, one can improve reaction speed, hand eye coordination, and hitting accuracy, enhancing control over ball. This trainer is equipped with a stable base that can hit the rackets towards the base and safely bounces back, providing a continuous training experience. It is easy to carry and install. The length and tension of the rope can be adjusted as needed to adapt to different hitting techniques and training place. Specifications: Material: High Elastic Size: As shown in the picture Package Includes: 1set Portable Tennis Trainer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.