Designed to provide storage, mobility, and versatility for college students living in cramped spaces who move frequently. The multitude of configurations possible make them a great choice for irregularly shaped rooms, they work with existing shelving too! It's not necessary to unload the shelving units to transport belongings as individual boxes unscrew and are sturdy moving boxes. They are stackable and easy to carry via the hand holds on all sides. If that's not enough, one unit by itself makes a perfectly sized impromptu seat, and two units tall is a great height for a table.