I was concerned about these surviving a wash. The one that I have washed stayed in place. These make masks much more efficient since they make the nose area stay much closer than those without the nose bridge. They also help decrease fogging of my glasses.
They worked well. I will need to get some more soon if I go back to work.
These masks are very well made, comfortable to wear and covers the nose and mouth without any slippage. The best mask I have purchased so far.
Good staging on the bridge of the nose.