This mask does what it’s supposed to do. The dark blue mask is when I first got it without any prior wear. The light blue mask if me after wearing it indoors for 3 hours, then going outside in the cold. The whole time I was indoors it didn’t fog up.I wish the plastic stayed away from my face more. The plastic on the sides touched my cheeks. There was a little bit of lipstick residue on the inside from one time that my lips must have touched the plastic but otherwise it did a good job of giving my lips space.It is a hot mask but what do you expect? Ventilation is hard when over half the mask is plastic.Overall if you are looking for a mask that shows your mouth while covering you nose and mouth, I would recommend these masks. They are not overly uncomfortable and they do what they are supposed to do.