Originally Posted by
tomato coupe
I don't see the point of carrying two tubes and a patch kit, or multiple CO2 cartridges and a pump.
I carry one tube and a patch kit, plus one CO2 cart and a small pump like this. It's my PACE plan: Primary, Alternate, Contingency, Emergency.
I don't flat very often, and when I do it's usually only once, so a single tube and a CO2 cart make for a quick stop. If I missed the source of the original flat and it flats again, or I get unlucky and flat the other wheel too, well, there's the patch kit and pump. It's about optimizing for the common case, but being prepared for the uncommon cases if need be.