I ordered the slatted aluminum one but they sent me the Lexan one. They also only charged me for the Lexan one. Not as secure, but basically out of sight out of mind. Most theft from vehicles now days are from them seeing something they want and breaking a window and grabbing it. Nobody has tried to break into mine since I’ve had it, and I’ve traveled all over in it. Well, I haven’t been to Detroit, Chicago or any of the big cities like that. Nashville, Daytona, Key West, Denver, Jackson Hole, and some others though and no problems. They were having some water leaking problems with the aluminum one when I bought mine so I just elected to keep the Lexan one since it is a solid piece.