Pre-printed packing list envelopes have a message on the front of the envelope that identifies the contents of the envelope for the recipient. These adhesive-backed plastic document pouches can be stuck to the outside of a package or shipping container to hold shipping documents. They ensure invoices, packing lists, safety data sheets, and other important documents are visible and accessible to recipients. They provide an alternative to placing the documents inside the package or shipping container and reduce the risk of the documents getting damaged, lost, or thrown out. Pre-printed packing list envelopes are used on boxes, cartons, mailers, tubes, and large envelopes.