- Multi-slit diffuser
- Extra-wide base
- 45 degree mouthpiece
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The full size Upright Bubbler from Grav Labs is a punchy little beast. The 50mm wide chamber can take a beast of a hit and the inverted showerhead perc is great at cooling and filtering your smoke as it flows through ready to send you towards the clouds. The 45 degree mouthpiece makes it a really comfortable device to use and the extra wide base will ensure it never gets accidentally tipped over.