This is the new Vert Shock System, a vertical leap training program developed by 2 individuals who are very famous in the world of basketball, Adam Folker and Justin 'Jus Fly' Darlington. br br Vert Shock is a new ground breaking approach for increasing an athlete's vertical jump, it utilizes a patent called the Folker System, named after Adam Folker, and it offers a unique approach for increasing ones vertical leap. br br By using the Vert Shock system one can gain 9-15 inches in the course of 8 weeks and the results are usually seen within the first month.