Decorate your space and galaxy themed party with this 71cm large unique shape Celestial Star foil mylar balloon. The perfect balloon for your space and galaxy party, this 71cm 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.