LOONBALLOON Circus Balloons, 28 inch Clown Head Confetti. Accent your circus themed party with this 28in. large unique shape Clown Head foil mylar balloon. The perfect balloon for your circus party, this 28in. 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.