If you want to inflate with helium you must have helium regulator for foil balloons. Can be inflated with either air or Helium, however helium is required for floating action. You just insert the strow, about 3-4 cm inside the balloon valve and inflate with your mouth gently and be careful not to broke it.
Live in the magic of the Wizarding World with our Harry Potter Balloon!! This balloon has an automatic sealing valve. It can be filled with air so it
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