When the base is filled with water, it instantly becomes heavy enough to hold the unit. Non-skid pads underneath help keep it stable.
Unwrap the cord, hit the ball as hard as you want, and the ball bounces back to you. -The harder you hit, the faster the ball will rebound to you.

The rubber cord is 15 feet long and stretches to 30 feet for hard-hit balls.
Wrap some of the cord around the base to your desired length to shorten the rebound.

It is an excellent device for practicing your strokes, developing a faster swing speed, or warming up.
Great for driveways, garages, and basements, or bring it to the court with you!
Have fun exercising this summer with this new tennis helper!

Self Training Tennis Helper