Lightweight, and can be stored either in the back pocket of a cycling jersey
They can also be attached to your bike in the bottle cage mounting points.
Can get you out of trouble if you encounter a flat tire whilst out riding
Can be used to pump a soft tyre up to better pressure at any point whilst out on a ride.
Light weight and portable.
High efficiency, more air-per-stroke.
Comes with two most popular valves, suit for American-style valves and English-style valves. and it also suit for basketball/balloon.
Material: Aluminum