The original Z-Ball Reaction Ball is BACK and BETTER! Z-Ball is now a PATENTED EXCLUSIVE and has been re-designed to make it even better: The new 7-knob design creates the same unpredictable bounces but eliminates the impossible bounces of the previous ball. New 2-color design increases visibility substantially on all surfaces. Use the blue and yellow ball on gym floors, use the orange and yellow ball on darker surfaces. The new Z-Ball is 40% bigger for easier handling and catching. Ideal for kids of all ages.  The Video shows 21 creative games and skill-building exercises using the Z-Ball.  More Information: Introduction  Format: DVD ; Length: 16 minutes