Creative Backflow Incense Burner Ceramic Ornaments Zen Home Indoor Sandalwood Ornamental Aromatherapy StoveWe added a windshield to the traditional back flow censer, which allows customers to enjoy the backflow incense, which is not affected by the wind. Package Include: 1 x Incense Burner Holder, 20 x Backflow incense cones The Backflow Principle: Because the density of smoke is heavier than the air density, smoke stream from the high down like a waterfall. How to use: Exquisite and interesting incense burner. Just three steps to get unexpected effect.