This Vortex Bowl has been modified to fit perfectly with Genie Hookah Stems. Developed and patented by Sahara Smoke Co., the Vortex bowl is an innovative idea on its own. Instead of leaking precious flavor down your stem, it holds in all of the shisha taste and pulls through the spire in the middle. This allows the shisha packed to smoke longer and stay moist, so it's nearly impossible to burn. Also, the design utilizes airflow to provide even and substantial heating. Vortex, forget about your ex!