Bubbles 101: Carbonating cylinders create the bubbles.
Exchanges replace empty carbonating cylinders with new ones.
You can easily exchange your carbonating cylinder via home delivery https://sodastream.com/pages/get-a-refill, or at a store near you https://sodastream.com/pages/store-locator
Back up carbonating cylinders are there for you when you need it most - so that you never run out of bubbles.
We recommend you sparkle smarter by always having a back up carbonating cylinder ready in the comfort of your home to avoid SOS situations (Save Our Sparkle!).