GRAV's namesake, the Gravitron, is the first glass on glass gravity bong/ever all-glass gravity bong, honing this classic technique down to a science that delivers seriously smooth and cool rips. The borosilicate glass is thermal-resistant, preventing the cracks and breakage associated with lesser materials. This inert glass also displays the best flavors while cooling hits down before inhalation. This clean and clear looking gravity bong is efficient, durable, and easy-to-clean all at once.
HOW THE GRAVITRON Grav Labs WORKS
The GRAV Gravitron 11" and 14" bong delivers highly concentrated rips, much larger and more potent than a pipe or joint. Users can enjoy the potency of an entire bowl of dry herb in one go if they please. As you light the bowl and slowly lift the inner bottle out of the outer water base, a magical force sucks smoke from the bowl into the chamber. That same force pushes it out of the downstem as you lower. This simple but effective smoking system has been cherished by connoisseurs for years, and now it's been perfected in GRAV's flagship pipe, the Gravitron.