PP Envelope Bag 1.material:PP 2.could do offset printing 3.size:A4 4.Front bag with string closure PP Envelope Bag1.PP Envelope Bag, Envelope Bag, Envelope, PP String Bag, String Bag, PP File Bag, PP Document 2.Bag, PP Bag3.Size: A44.Material: PP5.Feature: Front bag with string closure & back bag without closure PP Envelope Bag