Ive had 2 of these so far first one cracked down the length of the whole unit, this happened while it was in use. NOT good because the vape shouldnt get wet but when my first cracked lucky no water came out of it or it probably would of destroyed my vape unit.

The 2nd unit the inside chamber just dropped off when pulling the whole tube out of the vape unit, at 20 euro a go this is not very good for my wallet, I will purchase 1 more and do a best out of 3 but im really disappointed 40 euro plus shipping was wasted.

These bubblers are not cheap for what it is, and for my second to fall to bits has to say it was probably an issue within the glass of the inner tube to just drop off.