
This is one of the few products on the market that pulls the mask away from the nose and mouth to make breathing easier. This is a good product but as it is not flexible there is an issue with chin movement when speaking. As the jaw moves up and down, it removes the rigid frame from the nose and moves in an undesirable manner. I made a nice modification by cropping the frame from the area that touches my chin. With this refinement, the frame is almost perfect. See attached photo.