The best facemask, and I have tried many.
Don't be put off by the canvas-like fabric.  It seems thick, but it is more comfortable and breathable  than other masks that are much lighter fabric.  It fits well on the face with no gaps, and has a robust but flexible nose wire that you can really mold around the nose.  My eyeglasses fog up much less than with other masks, too.
Rating: 5 stars