Food grade stand up pouch is popular use for packing superfood, protein powder, nuts, dried fruit, etc. The bag top can be with zipper and tear notch. The bag can be heat sealed easily. For the front and back of the bag, it can be different material structure but thickness must be same. So there can be with window in the front which can be see-through and foil in the back for good barrier.
In the bag top, there can be round hole or euro slot, so it can be hanged out in the supermarket. It can also stand well in the goods shelf.