Material: PET+VMPET+PE it's for packing a lot of things. very convenient, moisture proof Ziplock snack pouch: 1) Material can be the following composition: PET+VMPET+PE (You need to tell us which material you want and the thickness of the material) 2) Size: is up to your needs. (You need to tell us the exact size you need) 3) Printing: with or without printing, both are ok. (You'd better send us ...