By Karen O. I need to have knee replacement surgery and this bike makes riding bike painless!!Review for SWAGTRON EB5 Pro City & Campus Folding eBike, Pedal-To-GoI am very happy with this product. It works well and is fun to ride. The seat is a bit uncomfortable but that is easily remedied with a gel seat cushion that you can put over the seat. I ride back and forth to work and it makes my commute enjoyable while giving me some exercise.Posted by Karen O.