A true game changer and a must try for every roller out there. The doobie bubbler completely changes the way a rollie hits. The glass doobie bubbler line adds water filtration and increased airflow allow for a cleaner, heavier and smoother hit. Just throw a little water in it, put your rollie in one side and put your lips to the other and prepare for a game changing it! Features: - Made out of glass for cleanest hit - Water chamber for smoother hit