SodaStream replacement cylinder: thanks to an additional cylinder in the spare pack, you can continue to carbonate while you replace the other cylinder. SodaStream glass bottle: the elegant glass carafe ensures a unique freshness and pure quality of your drinks. Enjoy a personalized touch and fun in all its glory. Dishwasher safe: these high-quality glass bottles are dishwasher safe and therefore easy to clean. Note: CO2 cylinder and 1L glass bottle are only suitable for DUO carbonating machine. Not all other carbonating devices can use this glass bottle. Box contents: 1 x SodaStream QC CO2 cylinder and 1 x 1 litre SodaStream glass bottle.