Abstract: A nestable, open-top container has a cover formed of two separate, co-planar pieces, each covering one-half of the open top. Each cover piece is hingedly connected to one side of the upper edge of the container and extends toward and overlaps the opposite side, that is, the side to which the other cover piece is hinged. The cover pieces' adjacent edges engage each other and their remote edges overlap and are supported upon their adjacent container upper edge portions. Each cover piece may be slid sidewise upon its hinge so that it can be spaced from the container upper edge portion which it otherwise overlaps wherein it can be swung either inside or outside of the container. When the cover pieces are arranged in co-planar covering positions, a number of boxes can be stacked, and when they are swung outwardly or inwardly of the container, the boxes may be nested.