What are rider signs

Rider signs are 4mm Coroplast signs designed to sit on top of or ride above standard coroplast signs using 8-inch metal rider pins (sold separately). Just like regular Coroplast signs, rider signs may show a subtle linear effect due to the corrugated flute structure. The inks are UV-cured for outdoor durability. Ensure your artwork has 0.5 inches of bleed on all sides. Do not add crop marks.