Ok, so take what I say with a pinch of salt since my son has not used it and I just got it. That is why I am going to return it.
The pros: It looks ok, my son was definitely interested in using it, it is not expensive and the seat is well cushioned.
The cons: The seat, which in theory adapts to any toilet for latter use is tiny. It can go in the big toilet bowl, so it will NOT work for latter use in a regular toilet seat. The hole in the potty seat is tiny and the green pee guard ends up being too close to the penis so when my son was trying to seat he hurt himself with the green guard (that is why it was not used). I could teach him to hold his penis down and to seat carefully to avoid further pain, but (in my opinion) if potty training is hard work unto itself having this potty is just going to make it harder. If you don't install the green guard thing pee can go everywhere, especially under the seat. This drives me to the last inconvenience I see, the bowl in the potty...