A bubbler is a type of smoking device that combines the features of a water pipe (bong) and a handheld pipe. It is designed to filter and cool the smoke before inhalation, similar to a bong, but in a more compact and portable size.

A typical bubbler consists of a bowl where the herb or tobacco is packed, a downstem that extends into a water chamber, and a mouthpiece for inhaling the smoke. The water chamber holds a small amount of water, which provides filtration and cools down the smoke as it passes through. This results in a smoother and more enjoyable smoking experience compared to using a regular pipe.