LOONBALLOON Birthday Bugs-Butterflies Balloons, 25 inch BRIGHT BUTTERFLY, SuperShape XL Accent your bugs and butterflies themed party with this 25in. large unique shape Bright Butterfly foil mylar balloon. The perfect balloon for your bugs and butterflies party, this 25in. 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. Bright Butterfly Foil Mylar Balloon 25in.