With the amount of diffusion caused by the percs inside of the Double Matrix to Honeycomb Bong w/ Ice Catcher, your tokes will be quite smooth. There are two matrix percs with plenty of slits both vertical and horizontal. These combined with the honeycomb perc located near the 4.5" wide base gives your smoke plenty of time to filter. As if these percs weren't enough, there is an ice catcher above the first matrix perc to cool your smoke down. The Double Matrix to Honeycomb Bong w/ Ice Catcher comes with an 18mm male bowl. This glass bowl fits the bong's 18mm female joint, which is supported by a Dewar's Joint. There are colored accents wrapped around the base and flared mouthpiece.