Poster tube closure

A plug-like tube closure, dimensioned and arranged for locating within an end of a tube, the tube closure comprising a closure surface with a substantially planar upper face and a lower face, wherein a perimeter wall extends downwardly, substantially transverse to the closure surface, for gripping the wall of a poster tube when inserted, and wherein the upper face has a frangible or weakened area spaced apart from the its perimeter which is arranged in use to be broken by user action to permit removal of the plug member and provide a visible indication of being broken.

A tube storage system, comprised of a hollow tube with at least one open end, and a removable plug member shaped and dimensioned to close-off the open end, wherein the plug member on its upper external side has no upstanding projection or lip so that it can fit flush within the tube's open end, wherein on its lower external side has a substantially transverse perimeter wall dimensioned to form a tight fit within the interior of the tube, and has a breakable region accessible from the upper external side which is configured to be broken by user action to enable extraction of the plug from the tube from underneath.