Custom corrugated plastic, also known by the brand name coroplast, is an extremely versatile, extruded twin-wall plastic sheet. It is waterproof, durable and can be cut to create collapsible signage. It’s a very lightweight material making it easy to transport and carry, but will not crush or warp. Our flatbed printer, digitally prints directly on the rigid material with waterproof UV cured inks (no peeling or fading) so there is no need for laminating. H stakes are the best way to display corrugated signs. They are inexpensive and fit nicely in the openings of the material and stick in the ground.