Collapsible saddle box

A collapsible saddle box adapted to be erected and suspended from spaced apart truck sidewalls above a bed of a pickup truck, said collapsible saddle box comprising:

• an upper housing extending a length sufficient to bridge the space between the spaced apart sidewalls of a pickup truck, said upper housing having a bottom wall for support upon said sidewalls above the pickup truck bed;
• a lower housing adapted to extend through said bottom wall of said upper housing into said bed and be supported in said bottom wall of said upper housing when in a first extended position relative to said upper housing, said lower housing containing a bottom wall for closing said lower housing;
• and
• said lower housing adapted to telescope into said upper housing through the bottom wall of said upper housing to bring said bottom walls of the two housing into substantially a coplanar relationship when in a second collapsed position.