Reasonable But Not Great
I ordered the package of 5 but it only came with 4 inside which was disappointing. Bracket is plastic not silicone, causes sweating under a mask and 'maskne' if worn for too long. Not all masks cloth or paper are equal so they don't fit comfortably with bracket because it flattens and slips, or pulls mask if taped. Breathing is a little easier with bracket for a while, but not if wind blows the mask into your nose, not sure if the multiple grids are the cause, it may be too flexible.  I wanted to try a few to see how they compared. This one is okay, could use improvement but I cannot use it everyday when I go out.
Rating: 3 stars