poly envelopecould protect thedocuments enclosed safe and readable in pouch during the transportation. 1.thickness:60 micron to 80 micron 2. size: all the envelopes could be custom made. 3.Custom printed and colored are available on receipt of customers request 4. lip: 40mm to 50mm 5. Packaging: all items are500pcs/ctn. 6. Minimum order: 30,000. 7. FOBXingang, Tianjin. ___________________________________________________________________________________ Durable and tearing resistant Strong glue for the sealed slip ensured documents security. Customers' designs, printing or logos are available. Widely used in express and logistics zone. Specification: LD/HD 3 layer environmental PE 60-80micron Breadth 20-25 mm glue on flap. Packed in box, 500pcs/box