Collapsible storage and carrying case

A collapsible bag construction comprising, in combination:

• a first back side panel with a top edge, a first lateral side edge, a second lateral side edge spaced from the first lateral side edge, and a bottom edge;
• a generally flexible bottom panel having a back side edge attached to the first back side panel bottom edge along a juncture, said bottom panel further including an outside, opposite side edges and a front edge;
• at least one bag transport wheel mounted onto the bag construction at the juncture;
• a telescoping handle mounted on the first back side panel;
• a generally rigid, separate, supplemental, generally flat planar, plate bottom panel having a top side, a bottom side, a back edge and a front edge;
• a releasable attachment mechanism on the flexible bottom panel to attach and detach the supplemental bottom panel to the outside of the flexible bottom panel to engage and maintain or to disengage the supplemental bottom panel from said flexible bottom panel, said supplemental bottom panel releasable and totally separable from said flexible bottom panel, said back side panel, said telescoping handle and wheel;
• said bag construction further including a generally flexible front and top panel with a lower edge and a peripheral edge joined to the lower edge, said lower edge hinged to said flexible bottom panel front edge;
• said bag construction further including a first lateral side panel and a second lateral side panel, said first lateral side panel and said second lateral side panel each including a peripheral side, and a peripheral side edge alone said peripheral side with a fastening mechanism and also including a connection side, said first lateral side panel connection side hinged to the first lateral side edge of the first back side panel;
• said second lateral side panel connection side hinged to the second lateral side edge of the back side panel,
• a releasable fastener for attaching the flexible bottom panel opposite side edges, and the front and top panel peripheral edge to the first lateral side panel peripheral edge, and the first back side panel top edge and also to the second lateral side panel peripheral edge to form an enclosure;
• and
• said first and second lateral side panels, said front and top panel, said bottom panel and said first back side panel disconnectable and foldable to a generally coplanar open flat array or alternatively foldable in an overlying panel array and fastenable together to form said enclosure.