NOT ANTI-FOG!
I wish the description for this product did not say it was anti-fog.  I literally had to take it out of my mask because my glasses were fogging up so badly I couldn't see.  When I wear my mask without the filters my glasses never fog.  I would like to have filters that do what they say so I may have to return them. Don't buy these if you believe your glasses won't fog, they fog more than anything else.
Rating: 1 stars