Packing list envelopes have an adhesive backing and can be stuck to the outside of a package or shipping container to hold shipping documents. These plastic document pouches ensure that invoices, packing lists, safety data sheets, and other important documents are accessible and visible to the recipient. Also known as packing slip pouches or packing slip envelope pouches, 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. Packing list envelopes are used on boxes, cartons, mailers, tubes, and large envelopes.