Easy to use and easy to own the vitality series back extension features a walk in and use design with no adjustments necessary the lumbar roller pad and pivoting back pad provide a superior comfortable movement during the full range of motion users can easily engage the add on weight with a simple push of a lever to increase the work load key features of the precor c011es back extension walk in design elevated foot rest resistance design weight stack 200 lbs 91 kg workout area l x w 5