Intensely-durable glass, vibrant design, and superb filtration will always have you coming back for more! Luxurious 5mm borosilicate glass and a heavy base impart a feeling of heaviness and fantastic quality. Aside from the impressive durability, this piece doesn't skimp in the design department. The beautiful clear glass is accented by bright pops of color, with trippy paint-swirl designs on the top perc and base, and gold Cali Cloudx logos. And when it comes to smoke quality, the Mind-Expander doesn't disappoint: An inline perc kicks off the filtration process, and tha pre-filtered smoke gets thoroughly purified by the UFO matrix perc up above. The hits you'll pull from this bong are always smooth and satisfying.