Glass bowls for Bongs are an essential accessory when using a water pipe! The Glass bowl is the component in which you burn your chosen herb in to create the smoke that’s going to flow throughout the bong eventually to be inhaled. To do this you simply insert the bowl into the joint on the bongs downpipe and put your herb in the bowl. Once the smoke has entered the bong it mixes with the water and flows through, this cools the smoke before it rises up the neck of the bong to the opening at the top. For an extra smooth hit consider buying a precooler.