This ball pump is just awesome. It is very light and small (about 20 cm long and 2.5 cm in diameter; plus a 17 cm long tube) and fits easily into any sports bag. And what, of course, if you want to take in the sports bag ideal, the small compartment is where you can keep the needle safe. Also, the pump is very easy and despite the small size (due to the fact that will be point in both directions) quite fast.
