Foamcore printing and Gatorboard printing are both created from poster board substances that are used for business printing. When you first glance at both, they might seem the same, but they are somewhat different. The one you decide on will be fixed on the length of the display.
Air released graphics is not new, and in fact, it has been used for mobile advertising for years. If you have seen a bus with the giant image of a model or a large covered truck with a shiny ad all over the vehicle body, then this is one example of air released graphics.