I originally purchased a Fisher Price Rain Forest bouncer for my son which he loved but had outgrown it by 4 months. Having read the good reviews of this seat I bought it and was initially delighted with it. It has deep sides which mean a baby would have difficulty rolling over the side. My little boy who is now 6 months loves the vibration and easily falls asleep. It would also be good for a newborn as it goes very flat. Unfortunately, I have two complaints: firstly the back of the seat is not long enough for my son. He is tall, but not exceptinally so, and already his head touches the top of the seat and if I try to pull him down further his back is in a bad position. I would like to be able to sit him in a more upright position which would help to resolve this problem, but this leads me into my second and most worrying problem. The safety belt is too short to secure around his waist which means it would be dangerous to put him in the upright position as he would easily be able to fall out. Overall a good product but if you have a tall child please think twice before buying as I may now have to buy a third seat and my son is only 6 months old.