... .2. Supports Neck, Head, and Upper Body.3. Perform Effective Abdominal Crunches at ANY Fitness Level.4. Ab Burning & Oblique Busting ... and functionality is perfect or use at home, in the gym or at work, making this piece of kit incredibly versatile ... bike, recumbent bike, elliptical trainer, stepper, exercise bench, home gym, trampoline, rowing machine, AB machines and so on. All products are produced ...