Flavoured drinks for every event: Simply carbonate your water using your SodaStream and then add the Diet Tonic mix Be the change: Reduce your plastic waste and help the environment, as each 440 ml bottle makes up to 9 litres of deliciously drinkable pop Favourite flavours on tap: Perfect for parties to create tasty tonic. Enjoy SodaStream refreshment at your fingertips Taste test: New and improved, naturally flavoured Diet Tonic soda syrup to make a delicious GandT. Contains no aspartame Instructions: Simply carbonate your water using SodaStream and then add the Diet Tonic flavour. Includes 1 x 440 ml bottles