Abstract: An expandable container includes a substantially horizontal base, four side walls, and a rim defining a container opening having a larger cross section than the base. At least one of the four side walls is configured as a movable side wall, having an upwardly extending side portion and a substantially horizontal base portion. An upper edge portion of the side portion is connected to the rim by a hinge such that the movable side wall is movable between a nesting position, in which the side wall is inclined to facilitate nesting of the container inside another container, and an expanded position, in which the side wall is moved outwardly to increase the storage space of the container, when compared to the nesting position. A system includes a main tote in which a plurality of expandable containers as described above may be nested.