I bought this to use when replacing my fiberglass insulation in my upstairs ceiling that was destroyed by a bad leak around my chimney. I finally have the leak repaired so I will be replacing the destroyed insulation that also had black mold in it. I tried it on and it fits my face perfectly, no leeks at all and very comfortable. I would definitely recommend this mask to others with no problem. It is a very affordable and quality mask and came in good packaging and in the time promised.