Wish a special someone a happy birthday with this fun Holographic Birthday Foil Balloon! "Happy Birthday" is displayed on the balloon is colorful designed lettering against a blue background dashed with colorful, sparkly polka dots. This 18'' foil balloon is printed on both sides and is sure to catch eyes with it's reflective and flashy design. All of our balloons are shipped flat and can be filled with helium at a local party store or with a helium tank. 1 Holographic Birthday Foil Balloon is included per package.