Danskin Ultimate Abs Ball with DVD Great for targeting core as well as stretching Ball's movement is limited to forward and backward only Peanut shape helps keep you in the proper position for all exercises Perform a variety of core exercises as well as use the ball as a bench to perform strength training workouts Includes a 34 x20", peanut-shaped ball, illustrated workout guide, 35-minute follow along workout DVD, and a dual action hand pump