12ft A Baby Boy Prism Banner. Celebrate the arrival of your little one with our Holographic Foil “A Baby Boy!” Banner. 1 Banner – 12 ft. This holographic foil banner features a blue multi-patterned “A Baby Boy!” headline print on a dotted blue holographic background. Hang up as a backdrop or along table edges, this banner is perfect for exciting gender reveal and baby shower parties. 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.