Product name: Tennis Trainer Package weight: 0.2kg Material: PE Color: white rope tennis octagonal base (base 110g, tennis 60g), black rope tennis round base (base 130g, tennis 60g), black rope tennis octagon base (base 110g, tennis 60g) Product size: width 21CM, thickness 5CM Packing size: 23 * 23 * 5CM Use scenarios: urban offices, community middle-aged and elderly people exercise, schools, entertainment venues and youth entertainment activities. Functional description * [Premium Material]: Our tennis training tool are made of upgrade PE. Tear-resistant and long service life. By using our convenient tennis trainer, you can quickly master the skills of tennis. * [Special Design]: The special design of the water inlet and outlet design completely solves the problem of difficulty in filling and filling the water in the past. A special device for connecting anti-wrapping hooks is added to the outside of the ball seat. * [Singles Training Self]: Train everywhere and whenever you want. Features everything a Tennis Player absolutely needs. Take your Tennis Skills to the next level in no time. * [Rebound Ball]: When the ball is knocked away, it will always come back, so that it can be hit again afterwards. This makes it possible to practice different strokes with the Tennis Trainer. * [Wide Applications]: The tennis tool is lightweight and portable, helpful for single person practice. Great for indoor and outdoor training. Used for plastic ground, sand, and grassland.