LOONBALLOON 29 inch AVOCADO Shape Balloon 4 Green Latex Set, Accent your fiesta themed party with this 29in. Avocado foil mylar balloon. The perfect balloon for your fiesta party, this 29in.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.