Pipa Mara Bianca The Mara Bianca 1622 is a unique Reverse Calabash from Brebbia. Featuring a rather unique design, the Brebbia Reverse Calabash is the same idea as a traditional calabash, There is a larger second chamber that allows the smoke to cool before entering your mouth. The "reverse" part comes in because the smoke cools inside the shank rather than beneath the bowl. The entire shank has been drilled out to 20mm wide and 40mm deep so is a fairly hefty chamber for such a small pipe. It’s made from lime wood with a Meerschaum bowl lining. Lime wood is a soft, porous wood that is easy to shape and the meerschaum lining protects the chamber from getting burned. The amber-colored acrylic stem is a perfect accent to the brilliant white pipe. You’re not likely to see another pipe like it anytime soon.