Review on ❄️ Winter Balaclava Ski Mask for Men and Women - Pixel Bear Thermal Full Face Mask for Cold Weather, Windproof and Anti Dust with Carbon Filter - Ideal for Skiing, Motorcycle, Cycling, Hiking - Black by Joshua Jemison

I've had a lot of face masks over the years. This is by far the best mask I have found so far. The built in valves and adjustable nosepiece ensure a good seal, which is very important for glasses wearers like me. So far this is the only mask I can wear for as long as I want without excessive fogging. Some of the reviews about drop down valves are true. The only reason I'm giving 4 stars instead of 5 is because the filter is replaceable and the valves themselves hold the assembly together. Instead of screwing in tight, they use a half turn, which is pretty easy to loosen. However, as long as you check the valves for tightness when putting the mask on, this shouldn't be a problem. A minor annoyance, but one that can be remedied with a simple check.