Decorate your casino themed party with this 76cm Casino Diamond Foil Balloon foil mylar balloon. The perfect balloon for your casino party, this 76cm Betallic party balloon is great for casino nights, prohibition and las Vegas themes! 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.