This little powerhouse has been designed to give the best possible cooling and filtration for a bong of this size. After your smoke has travelled down the removable diffused downstem it travels up through a pair of UFO percs that create a cloud of tiny bubbles and cause the temperature of the smoke to plummet while at the same time pulling out any dirt or particles that you don't want to inhale to a give you a smooth, tasty hit. Once through the second perc the bubbles hit a slitted splashguard which stops them in their tracks and lets only the smoke pass by. Last, but by no means least, are a trio of Ice Pinches which means you can run a few cubes of ice in it for a drop of another few degrees. The downstem has a 14.4mm female joint and the bowl they include is of course a 14.4mm male unit with roll stop fitted so it doesn't make any unwanted floor-bound excursions.