3M(TM) Full Print Packing List Envelope F1 is a side load, polyethylene envelope full face, top printed with packing list/invoice enclosed (red background with black text) with a strong rubber resin adhesive. 3M(TM) Full Print Packing List Envelope F1 offers an easy to remove liner, exposing a high tack adhesive that holds packing slips, invoices, cards and other shipping documents securely to packages. Envelope easily loads documents from back.