Review on 🌬️ TOOVREN Upgraded U Shaped Breathing Insert by Jacob Andreti

I use an adult mask. This bar is too small to work. It might work for a cold but not for an adult if you have a small face. The bar isn't high enough to really do anything good. Because it's so small, it shrinks and conforms to your face, actually causing your mask to bulge and lose its edge fit. I tried it on four different types of masks, they were all the same size and dimensions, and each of them didn't work as advertised.