The GRAV® Slush Cup Pocket Bubbler has all the features of the original redesigned into a fun handheld size that still packs tasty hits. In addition, this little pipe has a thick mouthpiece and extra reinforced walls making it one of the densest glass pipes we make. The 10mm cup bowl is ideal for packing tight and cashing in one quick session, and the Dewar-seal joint at the top of the bubbler provides a flush setting for the bowl to rest.