Tested a non-massage unit at a local furniture store. Was surprised how low the frame was to the ground. That and the fact it was non-massage is the reason I decided to go with you (basically both the same price). However, in reading previous comments, someone mentioned purchasing 'extra' legs'? So I wondered if I could buy replacement legs to make it higher off the ground, or some kind of extensions that would do the same thing with the existing legs? If I didn't weigh a little over 250 lbs and have arthritis in the knees, this wouldn't be a problem. Thank you for your help.