Park Tool Emergency Tire Boot TB-2
The fastest, easiest, and most secure way to repair a cut or worn tire sidewall. The TB-2 is produced using a strong, waterproof vinyl membrane with fiber weave reinforcement. A super strong pressure sensitive adhesive assures the boot stays in place in any tubed tire, road or mountain, high or low pressure. A true ride saver.
When you tear your sidewall on one of Central Oregon's more lava strewn trails, this is the official way to limp home. If you don't have one of these, a dollar bill or a plastic wrapper will do the trick. The beauty of these, though, is that they're thicker and they're sticky, which makes keeping them in place while reinstalling tube and tire much easier. Keep in mind that this intended for emergencies. When you get back home, it's time for a new tire. I don't always ride lave strewn trails, but when I do, I prefer Park Tool TB-2's.
It won't stick if even after cleaning the inside of a tire after using stans
These boot patches work pretty good, but because you can't sand down the rough insides of a tire to make it smooth like you can with a tube when patching, the Boot patch will only stick for about a month or two. However this boot patch is far stronger then quick remedies like candy wrapper or a dollar bill and will prevent objects from penetrating that area and giving you a flat or the tube from bubbling out of the cut. I carry one of these all the time and then when needed I cut one to fit an area about three as large as the actual cut, so you still have quite a bit of the boot patch left so you can use it again for another cut (of course I carry a small set of scissors to that with).
Great product, many uses and fits in seat bag. Got me home (20 miles) after a nasty cut to sidewall of tire. Put these in your kit and you won't be sorry.
Product has saved me once and a buddy once. Works in an emergency of side wall tear (not too large), with tube. Had to compliment with Power bar wrapper on larger tear (ran less air pressure but was not stranded or had to walk it out). Won't work on tubeless with Stan's (patch won't stick).