How to get a bike pump always at hand without attaching it to the bike? Dumb question, isn’t it? Just put one in your bag, will you answer. Okay, but how do you do if you want to carry a bag, if your bag is too small or that your pump is just too big? Ah.

British designer Philip Robinson proposes another way to solve the case: Hide it in the bike itself.

Its BioLogic ZorinPump is a combination of a seat-post and a floor-pump, hiding the pump mechanism inside the seat-post without adding extra weight to the bike. When you want to pump your tires up, just detach the seat and use it as the outer wall of the pump. (A variant use would be to sit on your pump; your tires would take a bit longer to get in shape, but at least, you don’t sweat.)

You’ll get a chance to find Robinson’s ZorinPump. He managed to get it manufactured by Dahon, a bicycle and cycling equipment maker, and the pump is currently on sale in nearly 30 countries.