Description: 【Premium Material】: The portable tennis trainer rebounder ball set is made of high quality plastic material, lightweight, sturdy, and durable. The baseboard of the trainer Includes 1 Baseboard, 1 ball, 1 rope. Improve your concentration and physical abilities. 【Easy to Use】: The tennis ball trainer partner sparring device is convenient for training without the hassle of picking up the ball. Fill the base with sand or water. No ball machine or walls are required; nonslip base for indoor and outdoor practice. 【Tennis Ball】: The high visibility color outdoor tennis with 40 holes, good elastic, strong impact resistance, and good weather resistance, allowing you to hit the ball accurately and quickly. 【Tennis Training Aid】: The self study tennis training tool is suitable for tennis coaches for various purposes, It can improve speed, hand eye coordination, stamina, and tennis game performance, suitable for adults kids, single players, beginners, etc. 【Wide Application】: The tennis serve trainer is perfect for indoor and outdoor practice such garden, park, yard, etc, giving you a comfortable experience. This solo tennis practice tool can be given to friends and family members who like to play tennis. Size Chart: 15.8cmx24cm/6.22inchx9.45inch Package Includes: 1 Tennis Trainer Baseboard 1 Tennis 1 Rope Note: Please allow slightly errors due to manual measurement and different monitors.