The EZ Fold Tonneau uses tri-fold technology, so there are no permanently mounted internal rails. Complete install and removal of this tonneau takes less than five minutes. The EZ Fold Tonneau features durable leather grain textured vinyl that is stretch and shrink resistant, with reinforced corner construction for additional strength and stability. It folds up compactly with lower profile hinge and rail designs, and integrated buckle straps to secure the folded tonneau to the cab rail. Easy to install or removal, even in extreme weather.