Abstract: A folding box forming a hinged lid container especially designed for cigarettes and other smoking articles is provided with a stationary box, a rotating cap and a locking mechanism. The rotating cap and stationary box are provided with complementary locking elements within the walls of the box to effect a locking and unlocking of the cap with an accompanying click in the release and the joinder of the locking elements. The locking means form a part of the walls and lie in the respective planes of the walls when the cap is in the closed or open position.