- Supershape foil balloon featuring the incredible Hulk, the strongest Avenger. Perfect for superhero-themed birthdays and action-packed party decorations.
They can be inflated with helium gas or just air (using a pump). They are also equipped with a self-locking valve that prevents the escape of gas (air or helium) once inflated. As a precaution, we still recommend closing the gas intake by tying a knot with a ribbon or by using one of our professional closures.
In the accessories section, you can find helium disposable cylinders or air pumps.
