Stündenglass is a brand known for creating innovative glass products, including the Gravity Bong. A Gravity Bong, also known as a “Grav,” is a type of bong that uses gravity to perc down into the water reservoir, creating a unique smoking experience. Unlike traditional bongs, which use air pressure to pull the smoke into the chamber, the Gravity Bong relies on gravity to do the work, allowing for a more relaxed and efficient smoking experience. Stündenglass Gravity Bongs are popular among cannabis enthusiasts for their seamless functionality and sleek design.