I have a small Lezyne - Road Drive, maybe? - that fits in a jersey pocket for my bikes that can't fit a frame pump. It takes hundreds of strokes to refill a 700 x 28 tire and bring it to rideable pressure, but it turns out to be easier than I originally expected. I tried CO2, which worked fine when I practiced it in the garage, and failed miserably on the road. Which is to say I failed miserably on the road - blew out two CO2 cylinders and had to make The Call Of Shame. Happened twice. Now I carry a pump, always.
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