When time is of the essence where inflating tyres is concerned, there’s no faster or easier way to inflate a tyre than using an air cartridge, also known as a CO2 cannister. These tiny sealed cartridges contain enough pressurized air to inflate a tyre in seconds. No messing around with pumps, just attach the cartridge to its head unit, pop it on the valve and hey presto, tyre is blown up. They are handy in a variety of situations from mountain bike racing to commuting where you don’t want to be spending time pumping and possibly being late for work. Only problem is that once you start using them you don’t want to go back to using a pump when out cycling!