Pros on this are obviously that you can squeeze the bowl to make it shallower while toking.Its also a very nice size for a quick toke. And good quality, Especially the top which is rounded and feels great when toking.
However this is a necessity as the hole that leads into the downstem is only a couple of millimetres across. This means that when inhaling with anything but a turbo flame lighter, youre going to need your green to be dead centre in the middle or it will be missed by the flame.
If you choose to use a gauze with it, the ejector bowl also has a habit of kicking it out when you squeeze it. Cleaning the bowl is fairly difficult as well.
Other than that its a beautiful little bong. Its a good talking point, and it does perform well as a bong IF you have a turbo flame (preferably a very focused/lengthy one), but if its going to be your only bong and if youre using a standard flame lighter id give it a miss.
So all in all
Pros: Good size/talking point/ Well sculpted Cons: Never totally clean/ Requires a turbo lighter