The chamber at the bottom houses a small donut recycler connected to the curvy joint tube, when leads to the matrix percolator below. As you take a hit, the donut pulls in smoke, forcing it down through the intricate percolator to be cooled and filtered by water. Then, smoke as a whopping 15 inches of travel space up the bong for further cooling for a silky-smooth hit. Matching color accents along the base, perc, neck, and decorative orb in the center. Up above, the neck provides a bit of space over the glass pinch for hit-cooling ice. This piece has size, durability, and great filtration in spades!