Itsa Bobo waterpipes are 100% custom, original designs by a local artist. The glass water pipes are glass, hand designed and coated in resin. The outside of your Bobo can be cleaned with a mild glass cleaner, dish soap, and most other non-abrasive household cleaners. You can clean the inside of your Bobo like you would any other glass. Cleaning and Use instructions: For continual care avoid high heat (such as flames from touches), scratching, or poking outside of glass. Each Itsa Bobo is coated with UV resistant epoxy but is not intended for prolonged or extreme light exposure (such as grow lights).