The Simply Ball Exercise System is a comprehensive workout program designed by Jennifer Pohlman and Rodney Searle in 2006. This system includes 25 flash cards, a DVD, and a booklet to help users strengthen their muscles and improve their overall fitness. The English language book focuses on exercise and provides a step-by-step guide for users to follow along with the workout program effectively. With its user-friendly format and personalized approach to fitness, this system is ideal for individuals looking to incorporate strength training into their daily routine. Actual item shown. Please note that there are two flash cards numbered 21 and no number 25 as verified when inspecting the item. It should go without saying but? no sort of actual exercise ball is included in this set.