A packing slip is a document that describes the contents of a shipment to a customer. The packing slip contains a separate line item for each item shipped. Each line item states the product number, product description, and unit quantity shipped. The weight may also be stated. The document is printed by the seller, who either includes it in the package or attaches it to the outside of the package in a sealed pouch.
A packing slip may be used by the recipient to verify the contents of a delivery.