If you're an avid cyclist like me, you're probably carrying in your tool-box a tiny little adapter so that you can connect your tubes to a car-designed air-compressor. The deceivingly named Bike Pump on Your Key Chain gives you an easy-to-carry adaptor that's almost impossible to lose.
There is an auto shop or fire station every few blocks in the city. Guess what? They all have air compressors. This is "The Missing Link", the key chain that allows you to connect and fill your bike tire with any air compressor hose. Never lug a bulky pump again! Buy "The Missing Link" and carry the solution to flats on your key chain!