Description: Professional Tennis Training EquipmentTennis trainer for building speed, hand eye coordination, and stamina. Improve your concentration and physical abilities. Easy to use and train. Quality MaterialTennis training aid is made of high quality ABS plastic material, lightweight, sturdy, and durable, and can be used for a long time. DesignThere is a small loop on the side of the tennis trainer to facilitate attaching tennis balls, and the recessed part is used to place rebound balls. Single tennis training device helps you learn tennis easily. Easy to UseFill the base with sand or water. No ball machine or walls are required; nonslip base for indoor and outdoor practice. Wide Application: The Tennis trainer is perfect for indoor and outdoor practice such as 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. Size Chart: 32cmx19cmx4cm/12.60inchx7.48inchx1.57inch Package Includes: you can choose 1 Tennis TrainerBaseboard 3 Tennis or 1 Tennis TrainerBaseboard 1 Tennis Note: Please allow slightly errors due to manual measurement and different monitors.