An article carrier having top, bottom and side walls interconnected to form a tubular structure is provided with end closure means in the form of door-like panels hinged to each end edge of each side wall, the door-like panels being folded into overlapping relationship and being secured together by interlocking means which comprises a locking aperture formed in one panel at each end of the carrier and arranged to cooperate with a locking panel foldably joined with the other panel and having an integral locking heel and a locking toe foldably joined to the locking panel, the locking heel and locking toe being arranged for insertion into the locking aperture in such manner as to secure the locking panel in flat face contacting relation with the panel in which a locking aperture is formed in order to secure these panels in overlapping relationship thereby to close the ends of the carrier.