Aesthetically, the bent neck gives this glass bubbler a unique look. The design has functional purposes. The splash guard holds the water in the pipe and away from your mouth. The mouthpiece is extended away from the heat source, so you will have a better holding position.
The glass has a fixed downstem that moves the smoke out of the bowl and into the bong. The fixed downstem distills the smoke through slits or holes. The glass bubbler is constructed from heavy glass, so it is less likely to break.