Vertical Leap safety, proper vertical jump

DunkNow Information for Parents and Guardians


DunkNow has been heavily-researched
and shown to be 100% safe for
all ages (11+) and levels.

4960 Almaden Expressway #277 San Jose, CA 95118 USA

DunkNow's History and Background

Our Company
DunkNow has developed the industry's most powerful Vertical Jump Program. Our company, DunkNow LLC. was established in 2001 and is located in San Jose, California. Our current address is 4960 Almaden Expressway #277 San Jose, California 95118. We also offer tours of our facilities if you plan ahead and request a tour.
Keep in mind that the only place to purchase one of our programs is through our website.

Our Promise/Guarantee
With every purchase of our programs, we offer a no-question, 6-month, 100% Money Back Guarantee. If your child doesn't jump higher, simply return the product to our California address and we will refund 100% of your money, no questions asked.

Our Products


DunkNow Program:
DunkNow is currently the most advanced Vertical Jump program in the world. DunkNow is currently used by over 30 Division I College Basketball teams as a part of their Vertical Jump routine. DunkNow c