Courier Bag, work for your Express. Trust us,Courier Bag flies to you. express delivery bag,mailing bag Courier Bag:1) Material: LDPE (Natural Bags), PP, PE, PO, OPP, PPE, PPU, PVA, PVC, CP2)Thickness: 60-80um (Microns) (one side) 3) Color printing: According to clients' requirement4) Bag style: Heat sealing bag5) Usage: Express delivery and fashion fields6) Good appearance7) Safety: Strong glue ...