a lot of gas stations have air pumps, but it's a little difficult to plan when your tire is going to need an emergency refill. That's why it's so useful to have your own pump, and no, not a hand ...

If your bike has Presta valves on its rims or tubes, you'll know that pumping the tires can be a fiddly business. The Zilch floor pump is claimed to address that problem, with head seals that don't ...