A beautiful backflow burner shows a pool base for collecting the fragrant smoke with three tubes shaped like cut bamboo for the smoke to pour through and down into the base. 
 
Backflow Incense Burners are specially designed to create smoke that cascades downwards, pouring dramatically down the tower with a stunning effect that will catch your eye. Once you have lit your incense cone, it will begin to smoke after about 5-10 mins. 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.