Tennis Trainer is a product that allows children and adults aswell to make ther first steps in tennis, or simply, have fun, excercise outdoors alone or with firends.
The product consists of a plastic base that is filled with watter to make it firm on the gorund, while you hit the ball that is connected to the base with an elastic cword, ball comes back with equal velocity, forcing you to anticipate where it will fall, and react so you can hit the ball repetetly.
Possible to change the packaging of the product to buyers specifications.
