In the early 2000's a new type of smoking pipe was invented.  A glass blunt!

People love glass blunts because they make great pipes for day trips.  You can pack a lot of herb in each glass blunt.

The glass blunt allows you to pack as much or as little as you want into a cylinder tube.  An inner tube controls the size of the chamber and provides the smoking pathway.  As you smoke the inner tube can be pushed out to knock the ash out, and reveal fresh herb.