Royalex is deformable and can return to its original shape with the application of heat. If you're in the habit of backing into trees and utility posts, this just might be the trailer for you.
Don't know how that characteristic might be degraded with long-term UV exposure, the bane of many plastics.
Downsides are (1) it's heavier than a similar sized
fiberglass trailer, and (2) it's less rigid, so it needs help from ribs on the roof and the interior cabinetry.