Abstract: A collapsible container has a base and a number of panels which are pivotally mounted to the base. When the container is being stored, the panels lie beside the base or upon the base, one on top of the other. When the container is in use, the panels are upright and define an enclosure. A latch is provided for interlocking adjacent panels. The latch has a slider which is slidable vertically when the container is upstanding and which slides between latch-locking and latch-unlocking positions. The latch further has a catch which is movable horizontally when the container is upstanding and which moves from a locking position for locking adjacent panels to an unlocking position. The latch has means for converting vertical movement of the slider to horizontal movement of the catch.