Keeps mask snug, not original model
As another reviewer wrote-This product is an imitation/knock-off of “The Essential Mask Brace” made by FixTheMask, so buy from them if you want to support the original inventors. It does work very well and keeps the mask snug and off the ears. This one is a bit too large and sometimes doesn't stay on my chin, but it does a pretty good job of creating a seal and keeping my glasses from fogging. It's not easy on/off, so you really have to put it on and leave it on.
Rating: 4 stars