High qualityThe base of the tennis trainer is made of high density material, very strong and durable. The tennis rebound ball is made of chemical fiber wool fabric, which has strong wear resistance and good elasticity. The attached rubber rope is thick and durable enough. In short, the tennis set is of good quality and practical. Water inlet and outlet The tennis training equipment has a water inlet and outlet design. By filling the training tool with water or sand and then providing it with a non-slip design at the bottom, the stability of the trainer base is improved. The spherical groove design fits the attached tennis ball perfectly. Self-taught tennis training Rebound tennis with a rope is very useful for solo tennis practice, it can improve your concentration, your exercise capacity and your hand-eye coordination. Simple and practical. Of course, it also allows you to master tennis skills in the process of self-study. Portable SetThe tennis training set is very portable. Before being filled with water and sand, the tennis base is light and easy to transport. You can easily take the tennis trainer outside and start a unique workout. In addition, the accessories of the tennis training device are simple and convenient for storage.