Get more out your SodaStream with the matching SodaStream accessories. That way, you can create an extra supply of sparkling water with the extra SodaStream bottles. These bottles are lightweight, so you can also easily take them with you on the go. Want to try something other than regular sparkling water? With SodaStream syrup, you can add extra flavor such as Pepsi or 7Up. With an extra SodaStream CO2 cylinder, you won't be without bubbles unexpectedly. Is your cylinder empty? Exchange at a SodaStream exchange point. You'll only have to pay for the carbon dioxide.