Make your party planning a breeze with this 45cm Princess Crown & Gem Happy Birthday Foil Balloon . The ultimate party balloon to encourage curiosity in the animal world and will bring out the best animal impersonations created by children . Made by Anagram, this party balloon is great for animal birthday parties !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.