Decent for the wearer of glasses
932556
Found in a search for a binocular I could use without removing my glasses.  It's still not ideal, but far better than what I've been using.  Also bright, moderately compact, and feel good in my hands.
2132749
I use glasses at work they take a pretty good beating, lenses still look good. Still have them, but I don't wear them as much., kinda more of a fab or stage I was going through.
2127977
The optical quality of these isn't the best, and they do feel like they would break if mishandled just a little, but so far so good.  They have been through 3 movies.  I do have to hold my head at a certain angle in order to obtain the best viewing though.  Can't turn my head at all or the 3D effect is lost.  Since I need my glasses in order to see, there are worse options than these clip-ons.  (glasses over glasses is NOT do-able in my opinion)
3192753
Typical pair of aviator glasses. They are a bit loose but I think I can just tighten the screws and we'll be ok.
814103
The lenses are great and do help to reduce eye strain. I've found that the glasses are a tad large for me front to back and tend to slip down on my nose. Mild annoyance for good product. I still use them regularly
763739
The glasses fit comfortably and protect from both sides without obscuring my view.
The only thing I found to be slightly annoying is that the bi-focal is a little high. It should be moved down about 3 mm
532474
As mentioned in other reviews, these glasses are comfortable and fit well.  However, the lenses are barely secured in the frame by two tabs extensions on each lense.  Therefore, it takes little effort to detach the lenses intentionally or accidentally which is often the case.  I've found it extremely irritating when trying to clean the lenses because it take no effort at all for them to fall out, making the cleaning task more difficult than it should be.  I haven't had them accidentally knocked off my face, but I can assure you the lenses will fall out and get lost in many circumstances.

If you want a cheap but effective pair of sunglasses for in-car use only, then these will probably work.  BUT, if you want a cheap pair for use outside where they may get bumped, dropped, or knocked off --> then I'd highly recommend something else for the price.
504749
Cheap glasses.  I like the style, but they sit forward on my nose a bit.  I adjusted the nose piece and there is still a gap on the bottom lens area.  There is air still getting in somewhere and it dries out my eyes from time to time.  For the price, they are acceptable and I like the fact they come with some extra lenses.  The clear lens is quite nice when riding in the dark.
3258765
A bit oversized for my glasses but they are fine for driving. The large hinge in the middle doesn't make them very attractive. I haven't had any problem with the rubber pads covering the clips coming off as noted by others.
3328213
I'm still searching for a set of safety glasses that are legitimately scratch resistant and don't fog. These are decent, but they aren't 100% perfect. But for the price, this sort of item is semi-disposable.
3597201
I bought this for less than eight dollars. I have a tendency of loosing my sunglasses. So for driving, I keep a cheap one in both my cars. This serves the purpose. The soft plastic tip that goes on your ears has a tendency of coming loose. Once it stayed between my ears when I took of the glasses. I thought I had lost that piece, but later found it on the shower floor.
845311
These are some decent inexpensive glasses. I have two pairs because I like em. The lens are quality. But maybe the plastic feels cheap. I don't care I like em anyway
2796367
PROS:

-They work
-Doesn't dim the image very much, or at all. Colors seem accurate to me.
-USB charging is convenient
-Comes with microfiber cloth and charging cable

CONS:

-the glasses don't block out light from the sides. For full immersion, it can be distracting to see things happening in your peripheral vision.
-The glasses have to be at a specific vertical angle to work. For my home theater setup, where my screen is slightly above eye-level, I have to tilt these glasses so the ear pieces are placed BELOW my ear rather than above. Otherwise I can see ghosting. Not vey comfortable.
3150001
I bought two pairs of glasses (two pairs of glasses and still cheaper than Gunnars). This pair shipped in a crappy box, feel tight on my head (I'm a woman so I was expecting too big or an ok fit), and the lenses are too narrow for anything other than a computer right in front of your face. If you have a small head or a narrow face then the fit may work for you. On the plus side they are clear so if you're working on color-sensitive material these will suite your purposes. They do look good so I'll take these to work.

If you're looking for a cheaper pair of computer glasses, I suggest you get a pair of Gamma Ray glasses for cheaper.
2142667
They are not very comfortable and do not fit over glasses very well. They seem to work okay.
4930180
These tend to curve quite a bit so that they can hug your face...but not uncomfortably so. Due to the curving, though, when not being worn they are a bit bulky and don't lay flat when the arms are folded. But when being worn, they are still a nice pair of glasses. Not too big, like the recent fad seems to be.
4538303
I bought these to put over my glasses while driving.  I just moved to Texas and it is crazy bright here.

I originally had some sunglasses like this but without the little windows on the side that I got at Walmart.  Those were better--they were slightly more comfortable and didn't look as dorky (the window on the side is both useless and unattractive).  However, I lost the other pair and wasn't able to find a replacement.

These work ok.  For my purposes I wish they didn't have windows on the side, were a little darker tinted, and were just a bit more comfy.  Having said that, they do fit and they do work as advertised.  I wouldn't be able to wear them all day because there a little less comfy, but they work well for the morning commute.