Abstract: A boot protection and antitheft apparatus which protects the flexible hollow boot extending between an opening in the forward surface of a camper shell and the rear window frame of a pickup truck cab. The apparatus includes two side members, which are substantially mirror images of each other, each of which includes a flat panel for substantially closing the opening between the truck cab and the camper shell and an angularly depending rectangular flange intersecting along one of the edges of each panel for facilitating attachment to the cab of the pickup truck. The apparatus is connected to the cab of the truck such that the flanges are inaccessible from the exterior and the panels are mounted substantially parallel to the sides of the cab rear window and are angled in towards each other at the ends approaching the camper shell.