Decorate your St. Patrick's Day or alcohol themed party with this 58cm large unique shape Beer Mug foil mylar balloon. The perfect balloon for your St. Patrick's Day or alcohol party, this 58cm 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.