LOONBALLOON Alien, Space, Earth Theme Balloons, 36 inch LIGHTNING BOLT, Accent your weather or superhero themed party with this 36in. large unique shape Lightning Bolt foil mylar balloon. The perfect balloon for your weather or superhero party, this 36in. 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.