SodaStream dishwasher safe Carbonating Bottles bring the fizz and keep it fresh and bubbly for up to 2 weeks! They are the perfect size for sharing or keep it in the fridge to pour from all day long.One SodaStream reusable carbonating bottle can save up to thousands of single use plastic bottles.Always fizz water before adding any flavour. This will help to ensure the best experience possible! Fizz up and Enjoy!