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Good mask, decently made with a comfortable fit, but I only received one mask and two filter sheets instead of the 2x masks and 4x filter sheets advertised. Not sure how to rectify this, but not what I paid for.
Firstly, I got 2 packs of masks as advertised (unlike some other people who only got 1). The filter tends to scrunch up a bit during insertion because the slot is rather small. Once inserted, the mask is quite comfortable to wear, secure enough to go for a stroll or jog. I have a large face so I wish the mask is a tiny bit bigger from nose to chin. Other than that, this is a nice mask.