- Foil balloons can be blown up using a pump or a straw, and they have an automatic closing mechanism. They can only be inflated with air.
- You need to insert the straw into the opening valve, in other words the opening on the tab at the end of the balloon. Put the straw in fully so that inflation is easier and more effective. The straw is not supplied with the balloon.
- If the opening of the balloon is stuck together, insert a fine pencil or a small straw so you can prise it open slowly.
- A helium balloon will lose its shape after several hours.