8 NET pre-labeled waterproof packing list envelopes help to protect your packing slips and important shipping information during transit, ensuring all the order information is received by your customers. Our packing list envelopes featured an adhesive coating or strips for a secure hold. You just need to remove the back of the envelops and stick it onto your packages. 7.5'' width and 5.5'' length, waterproof. Front is printed with "Packing List Enclosed." Self-adhesive offers a quick and easy way to seal your package without the need to moisten. Top layer is made of an LDPE 30-micron adhesive. Pressure-sensitive backing attaches securely to almost anything - paper, wood, plastic or metal.