Really easy set up; these clear plastic automatic locking boxes are an easy way to display items. Boxes come flat but assemble easily. Simply form the two sides into a box shape and the strong bottom automatically pops and locks in place. The top of the box folds over and tucks in with a small flap. Use these boxes to package food as they are PET safe or display any products. Material thickness: 0.30 mmWe have gold silver and kraft bottom pads for these boxes. See our Raised Bottom Box Inserts and Flat Bottom Box Inserts.