The GoFit Pro Stability Ball in gray (75cm) is a great way to ease into a fit lifestyle. Simply replace your office chair with this exercise ball and youll notice a change in your core stability. When youre ready to up the ante and exercise a bit more, theres no need for expensive videos or classes, just follow the exercise instructions printed right on the stability ball. These basic stability ball moves are designed to exercise your core and give you a great workout whenever and wherever you are. When youve advanced a bit and are ready for more exercises, an exercise DVD comes with the stability ball, so youve got all the tools you need to get in better shape. Start small and work up to the body youve always wanted. Exercise DVD and fit ball included.