I've also got a black cloth mask with a plastic vent on the front. Highly theatrical. It has a pouch inside to hold a filter. The filter it came with is marked PM2.5 but who knows what, if any, testing went into that? Actually, I was a bit annoyed because it was supposed to come with two filters but when I opened the packet there was only one. Not sufficiently annoyed to go back and complain though. I've only worn it once, briefly, in a shop. It was rather hot and my voice sounded very muffled even to me. It was also smelly, which I think is the cloth itself. I should probably have washed it before use. I've been told it looks Joe Biden-style but I reckon it's more like an extra from a dystopian sci-fi apocalypse B-movie.