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. Ancient Wisdom Backflow Incense Burner is suitable for home, office, teahouse, meditation, yoga studio... 
Always use on heat proof mat
Back-flow can damage varnished surfaces
Only use on a flat and stable surface. 
Do not place on painted or polished surfaces. 
Only to be used with one Back flow incense at the time.   
Never leave unattended  whilst in use.  
Keep out of reach of children.