Originally Posted by Bikedued

Sadly, most patch kits these days don't work very well at all, unless you really pay attention while purchasing them. I cannot count how many times I have been in a bind, and a cheap patch let air escape from underneath, out from the side. The ones I have found work the best, have the orange ring around the outside of the patch. Otherwise, I just replace the tube and go on my way. Furthermore, I no longer even consider purchasing a bicycle tire that has no form of flat protection.,,,,BD