The Poly Mailer Bag Courier Bag /Express Bag Material:Transparent LDPE or Co-ex , waterproofThickness:From 0.02mm-0.20mm , or do as you requestSize:All customized size 9X12'',10X13'' , 12X15.5 '' , 14.5X19'', 24X28'', 26X26''Printing:Can be printed from 0-8 colors , CMYK or PMS colorSeal:Side seal or 7mm skirt seal or 10mm pouch seal or bottom sealTape: Permanent tape or Level 1 to Level 4 tamper evident tape or zip lock Bar code:From 1 -4 Serial NO.Do as you requestPackaging:Inner plastic film ,cartons/boxes ,pallets available as request, container (if ocean transport)MOQ:10,000 pcs Usage:Courier Bag /Express Bag1.For courier company , sending parcels, confidential documents, express delivery.2.Ideal for internet shopping , catalog Shopping or TV Shopping company.3.Transfer of important and confidential documents.