12ft Happy 2nd Birthday Prism Banner. Make your party more elegant with our disposable “Happy 2nd Birthday” Prismatic Banner. 1 Birthday Banner – 12 ft. This cute prismatic banner features a “Happy 2nd Birthday” headline with fun and colorful design. This disposable prismatic banner is perfect for celebrating fun birthday parties. Made of durable foil material, this prismatic banner is very eye catching with high quality prints. This product is easy to assemble, install, and can be stored and re-used.