This Giant Foil Rainbow Balloon is sure to bring your bash a whole lot of good fortune. Measuring a whopping 36 inches, this giant foil will make a dazzling addition to any child's rainbow birthday party. You can also incorporate this helium-quality balloon into other party themes, such as a unicorn party or St. Patrick's Day party. Just inflate this 36-inch balloon and tie it to the guest of honour's chair, or to a balloon weight for an eye-catching decoration.