Choose from five sculpture designs that easily stand alone as display-worthy decor: watch as incense smoke cascades over, and through, each intricate detail. The burners are engineered to contain most of the smoke generated by each incense cone within the glass dome, while holes in its base clear out the cascading smoke to reduce residue. Translation: less clean-up, more zen. This bundle includes 2 tins of 20 cones each of specially formulated, gently-scented, long-lasting dipped backflow incense cones, also sold separately. The 'backflow effect' only works with backflow cones; ordinary cones will produce smoke as usual. Unlike traditional incense burners, which simply release smoke into the air, backflow burners mimic a waterfall-like flow of smoke that cascades downwards. Visit the Field Guide to learn more about how backflow incense burners work..View Backflow Incense Burner Bundle by Ash & Fir on our site for more info. - The Bespoke Post store has the greatest gear from the world's best small brands. Free exchanges, easy returns and no commitments.