3M Half Facepiece Reusable Respirator Assembly Kit 6391, Size Large, P100, Lightweight, Comfortable, Easy to Adjust, Includes 2091 Particulate Filter, Welding, Soldering, Asbestos

It works, it fits, and it's comfortable. I previously had the medium size which kinda-sorta fit but I found I was constantly fiddling with it to make sure I maintained a good seal. With this one I put it on and forget about it.There is another type of mask that has a "drop down" feature, which means when you undo the clasps at the back the mask drops down off your face. That's handy if you want to pop it off for a minute to talk/eat/drink etc but it's not a big deal to lift this one out of the way if you need to.Some reviews commented on it coming without the filters. Mine came with the filters, as expected. Not sure if some people are ordering from third party sellers or what. I'm still using the filters that came with my previous respirator and they fit just fine.I wore my respirator for several hours while pulling down an elderly lath-and-plaster wall and some 1930s drywall. Previously I'd used a paper dust mask for that kind of work and found I got enough dust in my nose to be annoying. After some hours of pulling stuff down and cleaning up dust (including getting quite close to piles of dust as I swept them into a dustpan, prior to sucking up the remainder in a shop vac), virtually nothing got through. The very small amount that got through suggested I didn't have the mask fitted quite perfectly, but obviously it was pretty close.For my purposes I'm not hugely bothered if I don't have a perfect seal - my usage is more for building dust rather than specifically hazardous material. That said, this thing feels like it would stand up just fine if I was removing nastier material than plaster dust.

Works great, so much better seal than the cloth N95s. Not exactly comfortable but not bad, I get used to it. Can't believe how reasonably priced it is. Includes the two pink filters, which have a 5-year shelf life (though will need to be replaced sooner if used a lot and they deteriorate). Thorough instructions for wearing, testing seal, checking for deterioration, etc. Should've bought one of these long ago. Bought just recently to deal with Bay Area smoke from Napa/Santa Rosa fires.OK, a few days of use later, I will add a couple of caveats. First, it has a very noticeable rubber smell. I get used to it more or less, but it's not real pleasant. Also, I am constantly readjusting it around my nose due to discomfort and even a little pain on the bridge of my nose. I guess this goes with getting a great seal, which is of prime importance, and it may not happen with other faces/noses, I don't know. Still, I will maintain my 5-star rating, as it really works great for the intended purpose. The difference in how my lungs and throat feel on these bad-air days when I wear it vs when I don't is substantial.

Very good mask seals to your face nicely super easy to change filters you can do it without taking it off. it protects you from more than harmful dust too my first one saved my face i caught a bolt with a 6000 rpm 4 hp grinder i lost grip with both hands and it spun around and the aluminum cased head hit me right in the mouth my mask took it all i was just fine. Not too difficult to wash when they get funky. Straps are not uncomfortable around neck or head after your break in period that is you will get a little rug burn at first. The straps will wear out over time with every day use they get longer and longer until they no longer have any stretch left but im sure all elastic bands do. I sand and polish aluminum so i fling sludge at mine all day the filter will last a good amount of time under these conditions. Not enough airflow on the way out though you may fog your safety glasses from time to time when your breath comes out of the top. here is the best price ive found so far too

Comfortable and reliable. It’s not as comfortable as it could be, but for 20$ it’s very solid. Fits my welding hood perfectly and no weird silicone smells. The design is pretty versatile for different sized heads.

I use this when cutting open converters, and it does a great job keeping dust and debris out. Comfortable fit, solid seal, and easy to swap filters. I’ve ordered this setup multiple times — dependable and worth every penny for the protection it provides.

I had to go into a moldy and dusty old house to clear out for sale. This mask did the trick as I have very reactive lungs. I would suggest the filters on this often. If you are in the same situation works great and made me feel safe. I also literally could not smell the mold at all. This mask is top quality and a real lifesaver. It is also lightweight.