These masks have been designed to provide more protection than your average cloth mask. We put the holes on the mask because the fabric of the mask is not breathable. So no air can pass through the fabric of the mask. That means that the only air that is passed through the mask goes through the holes. And if you have the filter in place then all the air you are breathing out and all the air you are breathing in is filtered. Beyond that there is also another layer of fabric behind the holes that holds the filter. 

Unlike other fabric masks, air and possibly droplets are passing through the entire mask since the fabric is breathable. Our masks have simply concentrated all the traveling air to the holes where it is sure to pass through the filter.