(a) Advertisement
Is your product better than your competitors? You do not have to spend on expensive online and off-line advertisements to let people know. An inexpensive window in the packaging for tea can do the job just as well. A window advertises your tea by letting people in a supermarket take a peek at the fresh, large granules of tea. In case of coffee beans, the window advertises the size of coffee beans.
(b) Confidence
Consumers are more inclined to buy a product if they have seen it. A window increases consumer confidence by letting them take a look at the product from the outside packaging. The more confident a consumer is about your product, the more are the chances that they will buy it.
(3) Security
Like the rest of the pouch, a window protects the packaged product from environmental and human hazards. It keeps oxygen, moisture, and environmental impurities out. Despite being transparent, it does its job just as well.
Due to all these advantages, there are many manufacturers who add windows to their pouches.