Brighten the birthday celebration up with our Polka Dot Birthday Prismatic Foil Balloon! This white foil balloon features a round shape with colorful prismatic polka dots bordering the balloon, a silver prismatic center, two-tiered birthday cake, and the message "Happy Birthday" bordering the middle. This balloon ships flat and can be inflated with air or helium. Self-sealing and reusable. Measures 18". Includes 1 foil balloon per package.