The Coleman gas is a resealable gas cartridge, with a screw valve for use with camping stoves and gas lamps.
It contains a propane/butane mix, for a steady and consistent burn across a wide range of temperatures.
The cartridge can be disconnnected and reconnected to your appliance in complete safety without leaks, due to the Coleman double safety seal valve.
C100 - 97g
C300 - 240g
C500 - 440g