The lifeline hybrid co2 mini pump provides the speed and convenience of a co2 inflator with the reliability of a manual pump with a compact footprint it fits easily into a seatbag or ruck sack pocket alongside spare tubes and co2 cartridges the pressure dial allows you to retain pressure in the cartridge for multiple tyre inflations when space to carry cartridges is at a premium simply inflate the tyre to a reasonable pressure using the manual mode and switch to the co2 mode to reach your d