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GRAV will only honor their lifetime warranty for returns and exchanges from BolderGlass, and no other Seller.
The GRAV® Coffee Mug Pocket Bubbler is the perfect addition to your morning routine. This pocket bubbler is made from thick borosilicate glass. The bubbler features a 10mm glass cup bowl.
The GRAV® Coffee Mug Pocket Bubbler has a unique design resembling a miniature coffee or espresso cup. The shape adds whimsy to your smoking experience and is easy to loop a finger through and hold casually.
Not only is this pocket bubbler visually appealing, but it also provides smooth hits thanks to its aggressive percolator downstem. The percolator diffuses and cools.