Accent your graduation themed party with this 41″ large unique shape Congratulations Grad Stars foil mylar balloon. The perfect balloon for your graduation party, this 41″/104cm Qualatex 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.