The Duallok CR-MK2 is a Plastic-free, child-resistant packaging system for high-end controlled substances. With interchangeable inserts, the container can be adapted to house anything from Pharmaceuticals to Cannabis infused products. The design utilises a carefully researched PLA reinforced cardboard to provide a robust and tear-resistant outer shell and locking system. Thicker cardboard elements are used to reinforce key areas of the structure and help to avoid the use of plastic. The diecut, semi-automated design is cost-effective and fully recyclable and/or biodegradable after use.