DESC: The IronMan Evolution Elliptical has a unique patented design that offers you benefits you will see in no other product. Older outdated elliptical designs have you being tilted foreword or backwards and put unnatural stress on your joints. The IronMan design keeps you in a normal vertical position thereby keeping your spine, hips, knees, and ankles in a natural position throughout the motion. And with only 3'' of space between the pedals you won't feel like your straddling the flywheel. The 19'' stride length provides a larger range of motion working your muscles more effectively. You can even use the unit in reverse to utilize multiple muscle groups.