... Specifications:1. Improved Design! Flip Over for Total Body Workout.2. Supports Neck, Head, and ... Effective Abdominal Crunches at ANY Fitness Level.4. Ab Burning & Oblique Busting. 5. Additional elbow ... toned, flatter and more flexible core. Using this Dragon Sports AB Roller for only 10-15 ... stepper, exercise bench, home gym, trampoline, rowing machine, AB machines and so on. All products are produced ...