It's tough to find a folding tonneau cover as, well, tough as the FiberMax. It's custom-built from Fiberglass Reinforced Polymer (FRP) on the outside with a solid aluminum core inside, so it has the perfect blend of rigidity and lightweight maneuverability. Score one for your new truck bed set-up. The top of this BAK tonneau cover can hold up to 300lbs of evenly distributed weight so you can carry even more stuff when you need to. But that's not all. The BAKFlip FiberMax Tonneau Cover flips all the way up to the back of your bed, freeing up your entire payload area for hauling oversized gear. Once folded up, it shields your rear window from shifting cargo, and it's padded to protect your paint from scratches. And, while it does cover your rear window, this folding tonneau cover leaves your third brake light visible to cars approaching you from behind. This BAK tonneau cover uses a revolutionary hinge system that stops the nastiest weather from leaking in. Your truck bed won't be vulnerable to wind, sleet, and rain ever again. That keeps your tools and equipment dry, gives you peace of mind, and vanquishes the ongoing feud between whether the bed and the cab rein supreme when it comes to hauling your tools. Looks more like a stalemate now.