Decorate your unicorn themed party with this 73cm large and original shape Unicorn foil mylar balloon. The ultimate balloon for your ocean or sea party, this 73cm Northstar party balloon is ideal for creating a wonderful experience! 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.