This GRAV funnel bowl is made out of high-quality borosilicate glass. The ring below the bowl is called a Maria, it stays cool so you can remove the bowl without burning your hand. This bowl is the most popular one GRAV sells, and for good reason. It is large enough for group sessions yet small enough for solo rips.
GRAV is known for its quality scientific glass pipes and water pipes, as well as innovative designs like the Helix, STAX, Arcline, and more. Aside from scientific glass, GRAV Labs also manufactures high-end vaporizers and accessories. They've been leading the industry for over 10 years and have created some of the most recognizable products for consumers around the globe. What sets GRAV apart from other brands is that they created an inexpensive product that looks awesome, and works like a charm.