we have this fleece for the third year in a row on multiple windows, because we now have two strong allergies in the house. The web fulfills what it is - it holds out the pollen, and very effective. That the airing of this is heavy and you do not see as much, based on common sense - a substance that is so dense that it can not by pollen, can halt other things just due. The light transmittance is but adequate, and it keeps us - except for storms - also good on Velcro. We can recommend it anyway.
