The red Z-Balls are out of stock until mid December.
Challenge: I want a training aid to help increase the speed of my students’ reflexes and reaction times.
Solution: Our patented Z-Ball speeds up reflexes! The 7-knob design creates unpredictable bounces for athletes with beginning through intermediate skills. Use the blue/yellow ball on gym floors, and the red/yellow ball on darker surfaces. Ideal for beginning to intermediate athletes ages 7 to 13.
Not tennis specific.