You can't run from it any longer, the big 5 - 0 is here! Decorate for your 50th birthday party with our 18" Oh No! It's My Birthday 50 Prismatic balloon! Each balloon features a black and blue background with the message "Oh no.. the Big Five-Oh!" in bright letters.Balloon ships flat and can be inflated with air or helium. Measures 18". Includes 1 foil balloon per package.