12ft 25th Silver Anniversary Prism Banner. Celebrate precious moments on your life’s milestone with Prismatic Foil “Happy 25th Anniversary” Banner. 1 Banner – 12 ft. This prismatic foil banner features a silver “Happy 25th Anniversary” headline print on a classic floral holographic background. An awesome addition to your party; hang from walls, tables, windows, or other surfaces to create a warm and lovely party atmosphere. Made of durable material that is easy to assemble and hang up. This banner can be reused and easily stored to use in the future.