Packing list envelopes ensure invoices and packing slips stay with your shipment and are easy to find. These clear packing list envelopes stick to the outside of packages, displaying documents so they won't get lost. Often labeled “Packing List Enclosed,” they keep paperwork visible while protecting it from dirt and moisture. With strong adhesive backing, these packing list enclosed envelopes secure your important papers to the box for hassle-free delivery.