Thanks to the SodaStream Reserve Pack CO2 Cylinder + Glass Carafe, you'll always have a large enough supply at your disposal to make sparkling water. This pack consists of a CO2 Cylinder for 60 liters of sparkling water, and a 0.75-liter glass carafe. This way, you can immediately make sparkling water in the carafe. Useful, if you have people coming over and want to serve fresh sparkling water. You can easily clean the carafe in the dishwasher, and it's only suitable for the SodaStream Crystal.