... 6.Different sizes according to your demand.Description Material constructionBopp/polyester(outside layer):Excellent printing surface,Provide strength. Aluminum foil ... /Metalized PET/CPP:Barrier layer,protects from moisture,light,gases,extends shelf life. polythene(PE)/CPP: ... bag,mid sealed flat bags, quad pouch,spouted bag,roll stock film,three-side-sealed, with handle or hanger ...