1. IN A DEFECT CARD CONTAINER HAVING AN ELONGATED BODY DEFINING AN OPEN TOP CHAMBER, SAID BODY BEING RABBETED ALONG THE TOP EDGE OF THE BACK TO PROVIDE A RECESS, AN ELONGATED FLEXIBLE COVER HAVING TOP, BACK AND SIDE PANELS COVERING THE TOP OF SAID CHAMBER AND EXTENDING PARTIALLY DOWN THE SIDES, FRONT, AND INTO SAID RABBET RECESS OF SAID BODY, THE SIDE PANELS OF SAID COVER BEING SLOTTED AND THE BACK EDGE OF SAID TOP EDGE PANEL BEING HINGED PERMITTING FLEXING OF SAID COVER TO OPEN AND CLOSED POSITIONS, SAID BODY BEING FORMED WITH THE BACK THEREOF THICKER AT THE THAN AT THE BOTTOM, THE IMPROVEMENT COMPRISING: AN ELONGATED FLANGE EXTENDING SUBSTANTIALLY THE LENGTH OF THE UNDERSIDE OF SAID TOP PANEL AND BEING INTEGRAL THEREWITH TO REINFORCE SAID COVER, MEANS RESTRICTING MOVEMENT OF SAID COVER PARALLEL TO SAID HINGE WHILE PERMITTING ROTARY DISPLACEMENT OF SAID BACK COVER PANEL, AND SAID REAR COVER PANEL HAVING A THICKNESS EQUAL TO OR LESS THAN THE FRONT TO REAR DEPTH OF SAID RECESS TO PERMIT ROTARY MOVEMENT THEREOF.