Blowing out your elbow trying to pump up a flat is super fun and all, but when we'd rather save our joints, bones, ligaments, and precious time, we go with an inflator hooked up with an Innovations CO2 Refill. It'll fill up a 700cc road tire to 100psi or a 26in MTB tire to 40psi in seconds, and weighs as much as a gentle breeze, so we can always have a few in our pack, pocket, or saddlebag in case of emergency.