I'm a 5'2" 150lb female and the size small fits great! I tried the medium size first and it pressed hard against my cheekbones and became leaky around my nose when I smiled, so I just got the size small in today and it fits perfectly! The clips are hard to work with to adjust the straps, but with a good fit I won't need to adjust them often (if ever, after the initial adjustment). It's also notable that the medium mask smelled fine when I got it, but the small mask has a funky smell (like a rubbery smell?) but hopefully it'll dissipate soon once it airs out a bit. This is especially important for me because I have chemical hypersensitivities. Otherwise, it's very comfortable to wear this mask for hours (I've worn it for 8 hours straight no problem). The valves work great so that it doesn't get too hot/humid and my face doesn't get oily. I did purchase some silicone pads and attached them to the plastic of the head strap when I used the size medium for better comfort with long hours of use, but I might not even need them for the size small since it doesn't need to be as tight to seal well on my face. For other people with chemical sensitivities and/or lung issues who need an effective and easy-to-breath-through filter, I suggest pairing this respirator with the 3M Advanced Particulate Filter 2297 P100's. Of course it depends on what exposures you'll be around, but they have very low resistance and are supposed to help filter out organic fumes. Again, just a suggestion - do your research first.Medium vs Small don't look much different outwardly, but definitely fit differently. The medium is perfect for my 5'11" heavyset husband. The small is perfect for little 5'2" me.Pictures:Inside of the small respirator, medium respirator on (more grey, with my hair pulled back - you can see it pressing on my cheekbones), and small respirator on (more beige, with my hair down - much better fit! I can smile with it keeping a good seal! =D).Pros:Super affordable and good qualityFits great if you get the right sizeThe valves work fantastically!!Very comfortable for hoursCons:Clips for adjusting the straps are a bit annoyingWhistles when exhaling for some filters (like 3M 2297's)Might smell weird at first, but not necessarily

This respiratior has been absolutely perfect for my work. Between welding and grinding theres constantly fumes and particulates where im working and pairing this mask with some p100 filters has been a game changer for me. When i use it all i can smell is fresh clean air and i know im protected. Its a very safe and percautious mask that will take care of whatever you need it for(given you use the right filters) And to add its very comfortable aswell, ive worn this mask for hours on end and havent had any issues with it being uncomfortable or painful. The straps are also adjustable which is just the cherry on top in terms of comfort. All it does is leave the normal red outline that goes away in a couple minutes and your face will be a bit sweaty lol. 3m is always my go to brand for any safety, sanding, adhesives, etc... They have amaing quality in their products and amazing prices for what you get. Overall a great experience and ill definitely be coming back to this series and brand in the future when i need other respirators.

The 3M half-face respirator is one of the best I’ve used. The seal is tight and reliable, providing excellent protection, and the Quick Latch system makes it incredibly easy to take on and off without removing your headgear — a huge convenience during active work.I also appreciate that it doesn’t have a cheap plastic or chemical smell like some other masks. The build quality is top-notch, with soft, durable materials that hold up over time and comfortable straps that stay secure without digging into your face.Overall, this is a high-performance, comfortable respirator that I’d confidently purchase again for sanding, grinding, or painting tasks.

I chose this face mask based on the reviews and price, and I am very satisfied.I'm surprised this is listed as a Large size. It fits me fine, but the adjustment straps are near their ends so if I had any fatter a head I'd be in trouble. I'm a lady. So for any jumbo husky man, he might have difficulty with fit (specifically with the straps to hook behind your neck).I like the placement of the straps. They do not interfere with my large ponytail/bun and do not get tangled in hair. It is easy to put on and remove.I sometimes have the issue of one of the filters falling off, but that's just because I didn't check to make sure it was screwed on properly. You don't want to screw on so much that it screws to the open position, but just enough to hold the filters on. I bought the 3M P100 filters through amazon for this and they work great.I never used one of these facepiece respirators before, but now that I have I no longer dread dealing with all the smelly and previously allergy-inducing chores I must do. Previously I was just using a disposable hospital mask for any troublesome tasks, but of course there's no comparison since this facepiece respirator actually does the job of filtering and whatnot.It's easy to breathe. I've only used it so far in this hot weather, so I get a bit sweaty if using it for extended periods of time. I also find myself "mouth breathing" with it on, but that's fine. Guess it goes back to my snorkeling days. And I suppose me doing the mouth breathing thing helps when I've used this for dealing with smelly garbage or cleaning out the goat shed.It seems to really be effective in moldy environments, especially when used with goggles (and there's no interference with space/comfort/etc. while wearing goggles and this facemask). No more headaches or itchy eyes or runny nose or any number of allergic reactions I usually would have when dealing with these environments.The price is excellent compared to in stores. Lots of opportunities to use this respirator. Changing a baby diaper? Dusting the mantle? Sawing a 2x4? Raking leaves? Making soap? Going to Kmart? Going line dancing in a barn? So many opportunities to breathe cleaner air.

I ordered this thing as just a general purpose filter mask because I don't/didn't have one and I do occasionally do things where having one would be a good thing. Like cleaning the coils under my refrigerator when they have so much dust it's unbelievable. I don't really want to breathe that crap and I could use a little cheapo facemask but they never fit right and the real cheap ones don't have a vent so the air gets stale and the dust still gets through and AHHHH!So this doesn't cost a lot. 8 bucks. I figured I'd give it a shot. What can you buy for 8 bucks these days? I was kind of annoyed that it doesn't come with any filters at all (have to order them separate) but again, 8 bucks. I'll end up spending more on filters for this than it cost. Those are pricey. Even for the basic ones. I don't understand why. Even the ones that have charcoal in them are not that complicated to manufacture so why the big price?Oh well. Anyway. I just got this yesterday and am still waiting on my "filters sold separately" which will not be here for days. I guess that's what you get when you go cheap. I was going to order the other one that supposedly comes with filters but some people said they didn't get the filters and I wasn't going to pay twice as much for the same basic product that's supposed to come with filters but sometimes doesn't.I think this will do the trick for my purposes. I'm not going to be doing anything super hardcore with it. Mostly just dust.I was obviously a bit concerned about the fit but that turned out not to be an issue really. Seems to fit well and is adjustable. It's a little uncomfortable but it's a mask that goes on your face and stays there with the help of elastic bands. Comfort is relative in that scenario. Like I cam imagine it would probably be unpleasant to wear this for a long time but I doubt you'd get much improvement in that area unless you spend A LOT more. I personally don't have the funds to experiment and see if one that costs ten times more is a little more comfortable.Anyway, I have tested it by putting it on and blocking the intake holes to see if it seals well around the silicone part that goes against your skin and it does. There is a little bit of air getting through somewhere but that's if I really push it. When you have filters on there, you're not going to be trying that hard to get the air in and the air is going to take the path of least resistance (like air does). A set of clean filters that are not completely clogged are going to be that path.I do wear glasses and it's a bit close but I can wear them with this on. The nose bridge area is just right there where if it came up any more it would be a problem. But it's probably about as good as you can expect on that for low cost.I mean, it's a little bit cheaply made but really not bad for what it costs. It will get the job done.