I bought this chair for my husband after open heart surgery. The lift function, heat option and massage/vibrate works perfectly. However because of the heat and massage functions, there are mechanisms in the cushions that are hard and lumpy making the chair not very cozy. So it's practical and functional but not very comfortable. We were hoping to keep it for a while but will most likely get rid of it once he doesn't need the assist. Would recommended to someone who needs it for medical purposes.