This style of box is self locking and when assembled forms a strong die cut box. The 2 sides fold up then lock over into the tabs, the top flap goes over the pack and the 2 wings tuck in at the front making the box a very strong mailer pack. Design can be modified to include locking tabs, handles, display panels etc. to suit your individual product requirements, we can also add insert or division pieces into the box aspart of the pack for extra protection during transit.The boxes will be supplied flat pack on pallets so easy to store, they can also be bundled in specific pack sizes where possible to assist with your storage requirements.