3M™ Top Print Packing List Envelope PLE-T4 is a 5.5in x 10in polyethylene envelope, top-printed: PACKING LIST/INVOICE ENCLOSED. The side-loading is designed to peel-and-stick envelopes with a high-tack rubber resin adhesive that sticks on contact to packages. Oil- and water-resistant, this packing list envelope safely and securely protects documents from damage throughout delivery.Keep packing slips, invoices, cards and other shipping documents safe and secure with 3M Top Print Packing List Envelope PLE-T4. This 5.5in x 10 in polyethylene envelope is top-printed with the message: "PACKING LIST/INVOICE ENCLOSED" and comes with a high-tack rubber resin adhesive that sticks immediately upon contact. This peel-and-stick envelope is oil- and water-resistant and built to withstand the toughest handling conditions.