The Campingaz CV 300 Plus is a resealable valve gas cartridge holding 240 g of a high-performance butane and propane mix (80/20), for Campingaz stoves and lanterns with the Easy Clic or Easy Clic Plus connection, such as the Bleuet Micro Plus, Twister Plus and Lumostar Plus. The propane in the mix helps the appliance keep working in cooler weather. You push the stove or lantern onto the cartridge and turn until it clicks for a secure, gas-tight fit. The self-sealing safety valve means the cartridge can be removed and refitted even when it is not empty, so you can move it between appliances or pack it separately between trips. It is compact enough for a rucksack, camping box or caravan cupboard, and makes a good spare to keep in the car.