Self-locking flip boxes are built of kraft board, paper board, or corrugated box in one piece. The lid is hinged to the box and has a unique construction that allows the box to be locked within. This box type offers for lots of visibility for text and graphics because it is printed both inside and out. Flat-packed and transported, these are cost-effective to freight and take up little storage space. Cosmetic boxes, meal boxes, and all hardware and technology products are ideal candidates.