Messenger Bag Features:1)Raw materials:Polypropylene(PP),high density Polyethylene(HDPE)PO,low density Polythelene(LDPE)PE,OPP,PP,CPP,PPU,PVC,CPE etc. 2)There are outside-white and inside-black express bags,anti-faking label document bags,express bags sprayed with serial code and three-side-sealed express bags etc available; 3)Customers'printed designs or logos available: 4)Durable and tearing resistant. 5)Applications:for promotion,packing,shopping,garment,and so on. Strict quality control,with ISO9001 certification,can provide SGS certification for raw materials 1)We have lower production cost and weare OEM(original equipment manufacturer); 2)You can choose the monolayer or multilayer laminated materials characterized by moisture resistance,static resistance,shock resistance,load endurance and strong protection. 3)The use of destructive strong adhesive can ensure the security and confidentiality ofthe products inside the postal bag,and during delivery,a documentary protecting bag with nice crafts craftsmanship and finely printed with multiple color is attached. 4)Credit:We have long-term relationship with many famous brands ,like FedEx,YISHION.etc 5)Supply ability:more than 5,000,000pcs every month.