This bubbler works exactly as advertised. I'm quite happy with the way it cools vapor and that it doesn't allow backsplash into the heating chamber.
However, I am not 100% happy with the way it mounts to the device.
1-It uses the swivel straw connection to the cooling chamber as opposed to connecting directly to the heating bowl the way other bubblers do. This creates an opportunity for the bubbler to move around and eventually I'm sure it's a matter of time before it falls off and breaks or topple over with the device.
Also the design is a bit awkward given it is made to be used with a portable Vaporizer. I keep mine in a small Pelican case but to some degree, it defeats the purpose of having a pocketable vaporizer.