Power System Balance Ball 2 Ropes is an inflatable dome with an option to attach exercise power cords on the sides. The comfortable fun way to workout your entire body. Used properly the Power Balance Ball will help you to tone and sculpt your body while losing extra pounds. Its unique design is intriguing and allows for new ways to exercise your body! It helps strengthen and coordinate your body by targeting those core muscles around your abdominal and back area. You not only gain strength, but trim, and tone your entire body. Yoga and Pilates exercises can also be done using the Power System Balance Ball. It comes fully assembled and just needs to be inflated.