Black Leaf Percolator IcebongThe special feature of this Black Leaf percolator bong is the pre cooler ash trap with integrated herb bowl. The smoke is drawn through the little tube into the pre cooler chamber where ashes and harmful substances get stuck. The smoke is further drawn through the diffusor adapter into the main chamber and the 4 slit dome percolator where it is strongly swirled. The dome percolator serves as splash guard at the same time. Ice notches separate the ice