Bests & Worsts Reviews from Amazon

I bought this mask to use while walking outside with my dog. The mask is very comfortable. I decided to check into whether nano masks could actually filter out COVID 19 particles. My research revealed that on June 23, 2020, Health Canada put this mask on a list of recalled respirator masks because the mask did not meet the minimum 95% filtration required for use in health care settings. I wasn't planning to use the mask in those settings, but when I checked the NIOSH site, the minimum filtration is only 20. For that reason, I will only be wearing this mask under a face shield. FWIW, Air Queen US is now selling the masks for half price which isn't surprising given the issues with minimum filtration