Abstract: A material supporting system for a pick-up truck includes a platform with side members oriented parallel to one another; and cross-members interposed between the slide members. The system also includes support legs, first tracks, second tracks and roller assemblies. One of the roller assemblies is attached to a first end of one of the slide members. One of the support legs is attached to a second end, opposite the first end, of said slide member; and one of the roller assemblies is attached to said support leg.

Abstract: A collapsible rack system for supporting material on a vehicle may include one or more support elements fixedly positioned above a roof of the vehicle and a plurality of slidable racks connected with the one or more support elements. The slidable racks may be positionable above the roof of the vehicle or above an un-roofed portion of the vehicle while remaining connected with the one or more support elements.

Abstract: A roof-mountable retractable cargo securing system for cargo positioned in an open bed of a pick-up truck, the system may include two roof-mountable base tubes interconnected with a connecting plate so that longitudinal axes of the base tubes are separated by a distance that exceeds a width of the cargo to be secured. Securing members concentric with and slidably engaged with the base tubes may be selectively enclosed within the base tubes or partially extended from the base tubes to positions at sides of the cargo to be secured. Contact arms may be pivotally coupled to ends of the securing members and rotationally positionable to interconnect the securing members with the cargo to be secured.