Bought this for my mother-in-law who struggles to get up and out of chairs. She is very happy with it and that is rise up to help her get out of the chair. I tested it and you are almost standing at full tilt, makes getting up super simple with very little effort. the zero gravity feature is effectivley the chair stretched out flat almost like a bed. My mother-in-law likes the massage function and uses it when feeling a bit achey. The chair comes in 2 section you have to put together. Its not hard but easier if there are 2 people to did it. Make sure you hear a click sound when you put the 2 pieces together, I gave the head rest a good press downwards and it clicked into place. Anothere nice feature is that it is on wheels so easy to move around. One thing to note for the power assit and massage funtions it does need to be plugged into  a mains socket.