Backflow Incense Burner is specially designed to create smoke that cascades downwards, pouring dramatically down the tower with a stunning effect that will catch your customer's eye.Once you have lit your incense cone, it will begin to smoke, the incense is heavier than air and it will fall dramatically in swirls and twists, through the hole and down over the item, to pool at the bottom. It is incredible to watch and very relaxing.Embrace the principles of Zen philosophy with the Zen Circle of Life Backflow Incense Burner. This minimalist design features a simple, yet profound, depiction of the Zen circle.  Please note: In order to create the smoke cascade effect you will need to use backflow incense cones.