Decorate your loved one's birthday with this SuperShape Rainbow Ombre Cupcake Happy Birthday! Shaped Foil Balloon 50cm x 68cm. The perfect balloon for that special birthday party, this Anagram balloon is ideal for starting a celebration to remember!This balloon includes a self-sealing valve, preventing the gas from escaping after it's inflated. The balloon can be inflated with helium to float or with a balloon air inflator. Balloon arrives uninflated.