It works and is comfortable on the face.
I’m not sure if  like it. It keeps the mask off your lipstick, but I have to make sure I’m using it right. It creates a space below the nose which, for me fills with hot air. Every face is different so you really have to try it. There are hooks on each side so you could possibly attach it to the mask. It fits nicely inside the various masks that I use, but it may be small for a man’s face. But then they usually don’t wear lipstick under their masks.
Rating: 4 stars