Gear up for the party by adding the Rainbow Foil Mylar Balloon to the party decorations. This foil party balloon measures 18" when inflated and features multi-colored dots and the phrase "Happy Birthday!" in a rainbow font. This metallic balloon can be coordinated with our other Rainbow Foil party supplies. With wholesale pricing and bulk quantities, our Rainbow Foil Mylar Balloons 10 ct are perfect for event planners, caterers, and home hostesses alike.