These boxes feature a lock at the bottom and a crease in the middle of the lid, letting the box fold up with ease. Boxes can convert into a flat shape and be restored when stretched. Many styles have an extended top lid that is folded into a double flap, tucked into the back wall to form a display panel.These boxes also feature an automatic locking base for fast assembly, paired with a foldable lid that turns into a pop-up header or stand-up panel. A bottom lock closure provides extremely strong containment and quick, easy assembly. Some styles use a 1-2-3 bottom design for added stability. Others feature a snap lock or crash lock bottom structure. Pre-glued bottoms streamline setup with a secure closure. This format combines packaging and a countertop display in one unit.