Visual Appeal
When a consumer can see fresh granola, coffee beans, tea, chocolate, and other food products without tearing open a pouch, they are more likely to buy it and it is a marketing fact. A transparent window sends across the message that your customers yet can be sure of the quality of your product. It makes them confident of your product and makes them more likely to pay for it.
Once your product has been bought, a transparent window helps consumers monitor consumption. When they can notice how much of the product they have used, and they will turn up to buy more before all of it has been exhausted. This in itself is a genius marketing tactic for the growth of your brand.