Abstract: A collapsible cooler apparatus includes a floor assembly which includes a quantity of a heat transfer material in a sealed floor module. A plurality of foldable wall assemblies are provided which include a lower wall subassembly, an upper wall subassembly, and an interior hinge connecting the lower wall subassembly to the upper wall subassembly. The lower wall subassemblies include respective quantities of a heat transfer material in respective sealed lower wall modules. The upper wall subassemblies include respective quantities of a heat transfer material in respective upper wall modules. A plurality of peripheral hinges are connected between the floor module and the lower wall subassemblies for securing the lower wall subassemblies to the floor assembly. Flexible corner panels are connected between adjacent foldable wall assemblies.

Abstract: A folding cover for a pickup truck bed is comprised of a plurality of substantially rigid material sheets hinged together using specially adapted hinges made of a flexible material, the flexible hinges extending the width of the sheets making the cover substantially leakproof/weatherproof. In a second embodiment, the cover can be mounted on rollers which themselves can be rollably supported by a horizontal track mounted to one or both of the side rails of the pickup truck bed to make folding and unfolding of the cover easier.