Description: 【Professional Tennis Training Equipment】Tennis trainer for building speed, hand eye coordination and stamina. Improve your concentration and physical abilities. Easy to use and train. 【Quality Material】Tennis training tool is made of high quality PP material, eco friendly and lightweight, sturdy and durable, can be used for a long time. 【Design】There 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 Use】Fill the base with sand or water and become heavier instantly to provide stable support for training. This design keeps the base from shaking while training. 【Application】This tennis trainer can be played indoors and outdoors. The tennis trainer support base is lightweight and portable, suitable for many places like gardens, parks, etc. Specification: Material: PE Size Chart: 25cmx16cm/9.84inchx6.30inch Package Includes: 1 Tennis Trainer Base, 1 Ball Note: Please allow slightly errors due to manual measurement and different monitors.