That's pretty cool. I have a Tri-fold lid. It does not have a lock on it and I am managing with it. I hated drilling holes in the liner to install a cover and I don't think I can drill more holes for an aftermarket lock. The material of the tri fold lid are very sturdy and looks like part of the car, this was the reason I went for it. Also after installation I found out that no cover available for these trucks even shutter one is waterproof. Only the fiberglass ones that are one piece and fixed are waterproof. As a solution, I am thinking of getting a waterproof container in big size and carrying it in the the trunk for shopping/ carriage purposes. I recently did grocery in it lol and things went everywhere. I knew the dangers so drove very carefully but still stiff was rolling around in there lol. no groceries wasted or broke btw but still, Not recommended 