4.5″ x 5.5″ Packing List Envelopes HighlightsInside measurements 4.5″ x 5.5″High clarity clear front window Waterproof polyethylene material protects packing lists and invoicesPressure sensitive adhesive backing allows for easy applicationTamper evident keeps your documents secure Our packing list envelopes are designed to provide superior tear and puncture resistance to secure documents until it reaches the destination. Widely used in the shipping distribution and fulfillment industry. Simply print your labels, addresses or instructions then insert into the envelope and place on the outside of your package.