My mask is not among the most comfortable accessories I wear, but I miss it every time I don’t take it with me, in my daily city commutes.
The first impression was I couldn’t breathe in it, especially when riding fast. I borrowed it to a friend that had to take it off definitively after a few hundred meters, for the same reason. The following day I adjusted it a little more on the nose, went moderate on the pedals and I was ok.
Good to know, it does not seal hermetically so it does not take away all the fumes from the traffic, but it’s a reasonable filter.
The most evident difference I got was when I went out without it, and immediately felt the exhaust gases that I kind of ignored before buying it.
In the winter a little bit more inconvenient with clogged nostrils, in the summer a little bit sweaty underneath, but that’s it, we’re good together. And it looks interesting too, makes you feel in the traffic like a green warrior or something…