Xtra smooth, well worth it if I you take big rips
I dropped the piece on its upper rim on the first use and broke the top lip off. Bad luck on my part in my opinion, nothing to do with the product. Flame polished the edge and its still very usable. Easy to fill, clean, and use with the provided bamboo stick. Major impact to quality of smoke due to resin removal. Makes cleaning your piece easier as there is so little resin in water pipe after half a dozen cycles. Still trying to figure out if it takes anything away from the experience. Anyone with respiratory issues should absolutely give this a try.