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I have asthma and live on a inter-coastal river that sometimes gets red and brown algae breakouts. Plus, in the fall there us always decaying sea grasses that put off methane gasses. I'm also allergic to most tree pollen. The U-Mask is the only filtration mask that works for me!
Brilliant, I noticed the difference in my breathing after a couple of weeks' use. I'm based in London and cycle 15+ miles every day so definitely needed!
HP, AMAZON REVIEW
I like this mask because it is much easier to breathe through than the typical masks. I have severe chemicals and pollen allergies that trigger asthma so I wear this often.
SHARON R. BARREETT