Abstract: A one piece paperboard blank has plurality of adjacent sections four of which are folded over at creases to form an inner container a wall of which is bonded to a section of an outer sleeve. The sleeve is wrapped about the inner container to form a cavity in which the inner container is located. Identical top and bottom flaps are each formed of an inner flap member integral with a side of the inner container bonded to an outer flap member integral with a section of the sleeve. A locking tab depends from each inner flap member and is interlocked to dust flaps of the inner container at the container top and bottom interior the flexible sleeve which assumes the shape of the abutting outer flap member. The sleeve is interlocked by locking tabs at the sleeve end and inserted into the side of the sleeve to preclude tab removal by tampering.