It may have a skeletal centerpiece, but nothing about this rig is "bare bones". The Pulsar Cerebral Bubble Matrix Recycler Bong is made from quality borosilicate glass with a bell shaped chamber. A miniature ash catcher is built into the fixed downstem; from there smoke travels through the disc percolator for the first stage of water filtration. It is then rapidly cycled with water through the recycler system for extra refinement. A captivating bubble matrix pattern can be seen in accents all around this piece, and a skull focal point is where the tubes convene for a delightfully spooky finish! Each bong includes a matching bubble matrix 14mm male herb slide. Multiple color options are available.