... anti-static,customise logo express ba Poly courier bag, express bag, and mailing bag, express delivery bag, mailer bag, post envelope: materialLDP and ... 12mm thickness, good security feature and anti-moisture, shockproof, can be recycled.4) Usage: for post, delivery packing, express ... anti-faking glue, can be sprayed with serial bar code, also can make a clear pouch on the bag for packing waybill ...