This large white gold number balloon is ideal for any birthday, big milestone, or anniversary. Supplied uninflated, number balloons are designed to be filled with helium. Simply pair with complimentary balloons, ribbon, and a balloon weight to create an eye-catching bouquet. Foil balloons filled with helium will last approximately 3 days. These balloons are self-sealing and have tabs with holes to thread string or ribbon through, perfect for stringing together multiple numbers. Balloon requires helium inflation to float, please see our range of disposable canisters. Add some ribbon and a balloon weight to stop it floating away. Can be air filled via straw or pump if being used as decoration only or attached to a balloon column or arch.