Decorate your under the sea themed party with this 86cm large unique shape Happy Whale foil mylar balloon. The perfect balloon for your under the sea party, this 86cm Anagram party balloon is great for setting the scene! 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.