Features could be improved, but it works.
I decided to give this a try because I wear glasses and when I breathe through the mask, I just go blind because my glasses always gets fogged up. Putting this between my face and mask does help. I can also speak more unrestricted. The quality is pretty good. The issue I encountered is that there really isn't a way to attach this to a fabric mask. It has some flimsy clips on both sides, but those would only work on the pleated masks. So I put a couple of pieces of double stick tape on it to secure it to the fabric masks that I wear. The tape holds it in place enough to stay attached while donning or removing the mask. Then when I need to wash it, the double stick tape is easily removed with no sticky residue. I purchased both the large and medium sizes for the entire family, but the difference in sizing is negligible. Overall I'm content with the price point and quality of these brackets. But it would not be a recurring purchase for our family.
Rating: 4 stars