First rule of flat club...
- Familiarity: I've put it through the wringer
...do not talk about Flats. This is one of those products that I hesitate to give a review on, or even think about, out of a total sense of fear that acknowledging it's use in my wheels might result in an instant flat. That being said - so far, so good in my tubulars. I had two very distinct experiences in installing this sealant though - it absolutely would not move through a set of Topeak extenders that I was trying to use (the extenders eventually COMPLETELY fell apart as a result of having the liquid in them) - a total complete mess. But, I switched to a set of Conti extenders, and the stuff just squirted right in, no problem, as advertised. Good stuff - but I hope I never find out !