Helps noticeably with my asthma on cold temperature walks. I have not yet had a chance to test it while running or XC skiing to see if I can get enough air in.
good mask arrived promptly fit well.
I can’t say enough good things about this. Perfect fit, doesn’t fall off my face when I talk and no fogged glasses. I have to wear a mask up to 16 hours at a time and it has been torture until now. Such a great find!
I had one neoprene mask for a long time, but it disappeared. Found this one on line and so glad I found it. Very comfortable to wear. Filters are easily changed. Just wish I could have gotten it in blue or red.