Originally Posted by
Iride01
It's all about having enough surface area. That's why pleated masks tend to work better. They also need to be constructed so they don't collapse on your nostrils and mouth forcing you to only breath through that small section of surface area instead of the entire mask.
Call me skeptical, but I'd have to try it to see; and by "try", I mean cycle or run with it on, not just walk around.
If I understand you correctly, these pleated masks have more volume, because they expand, so the material is not up against your face. That makes sense, but again, I would think that if you're exercising that extra volume wouldn't make any difference, unless of course the mask was made out of mosquito netting
I also wonder what kind of breathing would cause most pleated masks to collapse.