I saw we were speaking about bike air pumps. This is the one i use. Auto-select head that fit both Presta and Schrader valves, a dual-action design that pushes air on both the push and pull stroke for faster fill-ups, and a built-in pressure gauge for accurate inflation:
Bontrager Air Support Plus by Prodigy83, on Flickr
I fit it in the center pocket of my jerseys which have a dedicated mini pump pocket within them. I could also fit it on the bike with the water bottle holder.
I can also attest it can take a beating. It went flying during the crash that i suffered with mayra. It only had the small scratch you can see in the image.