Air in the tires keeps you rolling down the road. But how it gets there, and how fast you can fix a flat, is a key concern for riders on pavement or trail.
Review: Lezyne Pressure Drive Bike Pump

Bike Hand-Pump With Hose

Air in the tires keeps you rolling down the road. But how it gets there, and how fast you can fix a flat, is a key concern for riders on pavement or trail.