Add fun decorations to the 40th birthday celebration with our Birthday Shimmer 40th Prismatic Foil Balloon! The balloon features a colorful star shape foil balloon with prismatic stars printed all over and the message "Life Begins at 40 Happy Birthday". This balloon ships flat and can be inflated with air or helium. Self-sealing and reusable. Measures 18". Includes 1 foil balloon per package.