AbstractA topper for the bed of a pickup truck comprises a U-shaped frame including side members positioned to extend along the tops of the side walls and a front member positioned to extend along the top of the front wall of the pickup bed. Retaining members are received in the stake holes of the side walls of the pickup bed to secure the frame thereto. A cover is pivotally supported on the front member of the frame and extends continuously the full length and width of the pickup bed. The side and front members of the frame comprise hollow rectangular tubular cross sections with the side members functioning to wholly enclose the retaining members. Each retaining member includes a cross-shaped bolt, the side arms of which are rotatably positioned and then drawn upwardly into engagement with the underside of the tops of the side walls of the pickup bed. In an alternative embodiment, a plurality of ladder support members extend upwardly from the frame to support an upper ladder receiving structure, and the cover is pivotally supported within the upwardly extending members.