The technology described herein provides a slidable, retractable, and foldable cargo floor organizer with a rotatable and extensible retention net frame and associated cargo retention net for the rear cargo floor area of a vehicle. The system additionally provides an interior cargo tray having multiple partitions. The system includes a cargo retention net frame disposed about the interior cargo tray, wherein the cargo retention net frame is extensible, and a cargo retention net, the cargo retention net being disposed about the retention net frame, and wherein the cargo retention net is extensible and extends as the cargo retention net frame extends. The system provides for the secure containment of cargo in the rear cargo floor area of a vehicle.