The cheap bong measures 14 inch(32cm). It come with large base, you don’t have to worry about its stability on an even surface. 

Another highlight for the straight tube bong is that it has two percolators with 8 arms tree percolator in the middle part of the main tube and honeycomb percolator above the base.  The purified smoke will continue to travel to the 8 arm-tree perc of the glass bongs with much more slowed speed. Another round of percolating process will happen and a nice scene where different strings of smoke lingering around will come forward when you take a deep breath-in.

This cheap bong is under $50, and you can choose green or blue color.