Why do I sell Pilates Prop Bundles to accompany my DVD’s? Besides adding fun and variety to your workouts, they have distinct roles. Props provide “assistance” to make difficult exercises, attainable. They provide “resistance” necessary to build muscle and bone strength. The oval myofascial release ball and the 1/2 tennis balls provide stimulation to different areas of your body improving muscle relaxation and blood circulation. The bands in the Aging Strong bundle progress in resistance so when you find that the light resistance band is easy, you progress to the medium band and so on. The bands are low powder, low latex to reduce sensitivities. If you were to start with a band of your own that is too strong for a particular exercise, you might get discouraged and think you’re not doing something right. All the props are of the highest quality and selected to support you on your journey to age strong!