High QualityThe base of the tennis trainer is made of high density material, which is very strong and durable. The tennis rebound ball is made of chemical fiber woolen cloth, which has strong wear resistance and good elasticity. The attached rubber rope is thick enough and durable. In short, the tennis set is of good quality and practical. Water inlet and outletThe tennis training equipment has a water inlet and outlet design. By filling the trainer 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 The rebound tennis with a rope is very useful for solo tennis practice, it can improve your concentration, exercise ability and hand-eye coordination. Simple and practical. Of course, it also allows you to master tennis skills in the process of self-study. Unique and practical designThe base of the tennis training set has a design of round hole. Simply attach the rubber rope to the ring of the tennis training device to start a unique tennis workout. The handle design on the side of the training device makes it easy to carry the tennis training device. It can also be used to increase the load on the training device and increase stability. Portable SetThe tennis training set is very portable. Before being filled with water and sand, the tennis base is light and easy to carry. 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. Product Description Tennis Trainer with Long Rope and 1 Balls for Adults Kids Beginners String Length:4m Package includes: 1 x trainer base 1 x d balls Training Why Choose Our Tennis Trainer -Made of chemical fiber needle-punched woolen fabric, the rebound tennis ball has high wear resistance and can bounce up to 135cm. -The black rope has a long length of 4 meters, which is thicker and more durable. -Designed with non-slip EVA at the bottom of the tennis shoe and anti-winding attachment line. -Super easy to use, just fill the tennis base with water or sand and attach the tennis ball to the base. - Free yourself from hassle and easily perfect your skills without the help of a partner. -To practice anytime and anywhere, quickly and easily. -Suitable for all ages such as children, students, teenagers, office workers, middle-aged and community elders. Steps: 1. Fill the tennis base with water or sand. 2. Attach the tennis ball to the base. 3. Hit the ball slightly upwards to prevent it from being knocked down by the string. Thank you for your trust and support!