Great for keeping the mask from pressing into your nose and mouth
So the purpose of these works great. They put clips on the side of which I am not sure how that works. I actually ended up hot gluing mine into the masks and that worked well. I can breath and talk easier in my masks with these installed. They are plastic, not silicone and do not have a non-slip surface so may slide down if the mask you put them in does not have a tighter pull or ear loops. A few masks, the imprint looks like I have a cross on my face lol. Overall, great for giving your nose and mouth a little space.
Rating: 5 stars