I have purchased hundreds of these N95 masks over the years. My spouse works as a professional insulator of all types (fiberglass, perfect fill, spray foam, etc) and these are the only ones he ever uses. The company provides masks but he will still suck up the cost and purchase these for himself instead.
The masks are soft and comfortable against the skin and the flexible metal nose clip provides a custom fit around the nose. The two stretch bands go around the head rather than behind the ears making it very secure without any irritation.
On a normal to heavy workday he will use one mask a day. On a lighter day he'll get a couple uses before throwing it out. It filters all the particles. When he's finished, the outside of the mask will be dirty, but the inside remains clean and stark white.
These have always been and will continue to be a repeat purchase.