Abstract: A cooler insert system that includes an open-sided, main frame structure including an end wall and two opposed side walls, the end wall and the two opposed side walls each having an opening formed therethrough, the two opposed side walls having three pairs of divider screen guide channels; a snap fit, hinged frame panel that is simultaneously snap fittable to an end of each of the two opposed sidewalls of the frame structure to form an open topped box with the main frame structure; three divider screens, each divider screen being insertable into one pair of the three pairs of divider screen guide channels of the main frame structure to divide the interior of the main frame structure into compartments; and a number of stackable trays that are positionable within a compartment formed by one of the divider screens, each stackable tray having a holding cavity defined therein that is accessible through an access opening and a lower registration protrusion extending from the bottom thereof; the registration protrus