I bought this type of mask because I'm finding the ear elastic masks are too uncomfortable, and I wanted something to hang around my neck hands free so I could just pull it up over my mouth and nose when entering a building. This accomplished that. My issues are 2 things. The mask smells like chemicals. You know the smell I'm talking about. I had to soak it in hot water and tide detergent and let air dry. That got the smell out. My second issue is the drawstring elastic. It's necessary to have because you need to tighten it a little bit for it to stay up on your face. The problem is, it feels like a thick rounded shoestring under the mask. It made indentations on my nose and upper cheeks after a few minutes, and I only tightened it enough for it to stay up. If it's all the way loose, it won't stay on your face as a mask. You could always use it for a headband or another style because this can be worn many ways. I want it for a face covering in the stores. After 10 minutes, the string digging in your face is annoying and uncomfortable. If they used a flat piece of elastic, maybe that would lay more smoothly on your face, but they didn't. The material of the mask is so thin, it doesn't pad the elastic at all. The dark blue color on this masks is really purple, FYI. I will still keep this for a headband, but still in search of a bandana mask I can wear comfortably as a face covering.

The material is thinner than I was expecting, but it seems well made and the drawstring is very useful for getting the fit you want

These neck-gator style "masks" I so far like the best out of all the others we've bought because they have an actual rope-elastic with a pull-stop. You can snug these up to fit just right time and time again without having to worry about the fabric getting sloppy and loose like other brands, which eventually don't stay at all.
I appreciate that, as every other neck gator bought is basically just a spandex/poly sleeve with barely any elastic sewn in - if any at all.

Certainly like these best, the draw pull and elastic rope should be machine washable too - I usually put mine in a fishnet bag so the pulls don't smack and scrape around the insides of the washer & dryer.
That said, as much as I like the rope and draw pull design - the fabric as in all the other ones I've seen, remains this very sheer, stretchy, thin, light-shines-right-through-it affair that isn't going to protect you from breathing in viruses or exposing others to virus-laden particles of moisture you may cough or breathe outwards when wearing.

Best solution I've found is to just take a rectangular piece of heavier-weight fabric or even a T-Shirt and cut out enough to fold over once, and then sew (or glue?) the piece to the inside of the neck-gator where your face would press against. This gives you additional layering to protect you better...(If it's noticeably harder to see light shining through, it'll be better to trap/block viruses), and still gives you something comfortable to wear.
The N95 masks that elastic-band around the back of your head are the best civilian protection by far - but some people can't wear those. If you have over-the-ear hearing aids for example, and those masks that loop around your ears just serve to knock out the hearing aids or cause discomfort wearing both... you're probably not going to wear those style of masks. Another might be that hand or shoulder dexterity is a problem, and it's easier for someone to lift a neck-gator up or down from their face rather than trying to fiddle with two elastics that go up and around back behind their head.
We bought a few for my Mother, she feels much more comfortable using these neck-gator styles and safer now because she CAN use them.

I got this to (ideally) make walks easier pandemic and beyond. We like to take daily walks around the neighborhood and, for obvious reasons, want to be able to mask up when we come across others. There's also the added benefit of times when the winds are crazy around here (often) and kick up dust or those less frequent but lately more common times when there are wildfires nearby.

I'm a relatively big guy (6'2") with a stocky build. I don't have a crazy thick neck but it isn't a pencil neck either. I can wear this but honestly, it feels like a collar. Pulling it up on my face (I admit, my head is a bit on the big side, ego aside), it's squishing my face.

Meanwhile, getting my wife to put it on, it's perfect: loose around the neck, comfortable up on the face. So guess who's got a new neck gaiter?

Normally, I just deal with the fact that the world isn't really going to assume someone my size is the norm. But, this thing is advertised as a one-size fits all sort of solution with flexible edges and all that and it really is that within a limit. If you're a normal sized human being, you'll be fine. If you're not, maybe check elsewhere?

What really differentiates this neck gaiter is the drawstring at the back with a metal tab to keep the bit you pulled snugly in place without slipping. (Slippage was a major concern since I'm definitely on the smaller side.) Because of this little bit of engineering, you can pull the front up over your nose in mouth while keeping the rest at the back of your neck, instead of having to pull the whole thing halfway up your head and ears to keep it in place. This also allows the front to not be pulled tightly up against your face and mouth, instead giving it enough room for the fabric to drape and blouse loosely and comfortably while still staying secure above your nose. This space also helps reduce the amount of particles you're going to breathe in through the fabric, if that is what you are using this accessory for.

Personally I am using this accessory as something I can easily pull up while working, walking, or biking outdoors to protect against wind, pollen, sun, dirt, or grass and weed trimmings. So far it works great. It feels cooler in hot weather, and warms your neck and face up in colder weather.

When not "in use", it drapes around your neck loosely with a good bit of material at the front, very much like an old school bandana or neck scarf -- it doesn't wad up tightly like many neck gaiters do. It gives any outfit a very "outdoorsy" look.

Incidentally I also tried wearing the garment on my head, like a headscarf. It will indeed give you a bit of a "pirate" look (and maybe you'd like to put a band on the long trailing end like the pirates did) but is very comfortable, good at keeping your hair out of the way, and the silky fabric actually does cool your hair/top of the head a little bit. (Here in Texas that is an extremely important point.)

If you are looking for a really functional neck gaiter, this is the brand that I would recommend!