How's this for some great ad copy:

"For some urban dwellers the bicycle is their main form of transportation and a flat tire could cost them a days pay or even in the most severe situations a crippling or even fatal accident. Granted this is a little melodramatic because most of the time it’s just going to be someone like you out for a fun day on your bike and you’ll have a flat tire and have to push or carry your bike to the nearest shop to have it repaired. Even if you have the tools and patches with you, in most cases you still won’t have much success with an emergency repair because about half the time the rim will be damaged."