copper is the lense you want.
594056
to start, i am happy with smith lenses altogether  for their ability to not fog. not as good as my friends with the little fan inside but as good as it gets otherwise.  i have wasted much money on lenses that couldn't  solve the problem of not being able to see the contours of the snow in foggy, low light, overcast or snow storms.  i have bought red, yellow, blue and clear with a variety of treatments.  all gimmicks and a waste of money.  copper is the solution to all those conditions and is of course good in sunny conditions.  it even allows me to continue see the contours in low light.  it is the only lens i use beside the clear which i use for being outside at night and am using artificial light to see with.  i don't know if being polarized  helps so i think you could save some money by buying the copper non polarized lenses
36044
Awesome Gadget for holding wires while soldering. The lens is pretty decent for looking close at hard to read print on components in devices.
4864053
A nice piece of glass. Easily screws over the existing lens. Does the job nicely allowing zoom through and no unsightly bending around the edges. Attractive price too.
2172605
Glasses fit very well, nose piece and rubber on side of scalp sits well.  I've had other brands where the rubber has melted in the sun and left permanently distorted, this rubber appears to be better quality.  The lens are good weight.  The only thing I didn't like 100% is that the Polarchromic Copper lenses aren't as dark as I would have liked.  They let in a great amount of light but I wanted a little less.  I do a lot of fishing on the water and the shore and wanted lenses a little darker.  Other than me wanting the lenses a little darker these are great shades and I plan to have them a long time.
1475918
Nice, real glass lens! Little distortion from it.
To me it is better than carrying a jewelers loop around in my pocket.
Will get the silver tone next.
2170125
I have been making a lot of jewelry lately (mostly with bright copper findings) and I kept seeing these things in my recommended items so I finally bought some to try out.  I find these roughly on par with the others I bought from other manufacturers (in different metal finishes) in terms of quality.

These are pretty tiny, so you would need to use a thin stringing material, but then I guess thin threads or wires are the ones that need protecting most in the first place.  You just put a crimp tube on your wire, thread it through one side of this and around the loop, and back through the other side, then through the crimp tube.  (You would just tie knots and use a knot cover or something like that if you were using thread instead.  You'd have to draw it through this finding with a twisted wire needle, most likely.)  Then attach a jump ring and your clasp and you are good to go.

You would want to squeeze the ends of this together so you don't have a giant loop coming out of your crimp tube (the crimp tube would be more effective that way, and it would look nicer).  It took me a long time to get the hang of this.  I have broken a few of these by squeezing too hard with my pliers.  With practice, I did improve, however.  Just be prepared to lose a few in the process.

These do add strength to traditionally weak parts of jewelry, which is appreciated.  The finish is nice and even and matches my other copper beads, metal sheet, wire, and findings.  To keep it looking that way, store the free findings as well as whatever jewelry you make in an enclosed container with some anti-tarnish tabs, because copper does oxidize and take on an antiqued look otherwise.

Overall, although there were a few hiccups as I learned to use these, I'm glad to have found them and will probably be buying more soon.
3286063
Quality optics at a decent price. Includes a plastic lens hood that can easily be snapped on or off. Pictures taken with this lens are awesome. I took some pictures from the Staten Island ferry of the Statue of Liberty and they look like I was standing right in front.
2067637
I love this lens.  I live in Colorado Springs and have lots of wildlife, like bears.  I can quickly get out my camera and have the perfect lens already on it.  Great photos of the twin cub bears, by the way.
4818639
Nice salt and pepper grinders. The copper makes them stand out from others.
1539277
One of the basic lenses every photographer should own. Even though some people complain about construction, plastic and not very durable, but come one, for this price its a steal!
4903271
For the price of less than $4 including shipping, this is an excellent hand lenses. It fits in the watch pocket of jeans and is ideal for my teenage son's geology expeditions. It comes in quite handy at home, too. If you are needing a larger size loupe, this one is worth it!
3143453
I like the wrap style and square lens.  They curve around your head when you push them up from your eyes.  The polarized lenses give more clear vision.
4711458
Totally and amazingly useful loupe! One word of warning, they are not stereoscopic; however, if used to provide quick inspection this is not a problem. These glasses provide an above average image quality and are well built. The intended use for me was precision machining and SMD inspection.

Also they can be plac d in front page
2333302
You can get some really good pictures with this affordable lens if you work within it's limitations. Mainly it wants a lot of light! I know, right? What a thing fora lens to need! Expect build quality and other properties to match the price range; not necessarily a bad thing, just worth mentioning.
4722274
Great little lens and bundle, your gonna need this lens in your arsenal, you can't beat the price,  buy now!
1210293
Nice optics, not dime-store plastic with distortions. LED lights are placed to uniformly light the subject. Nice low price.  Every feature is done well so just buy it. I wanted one but 3 was inexpensive enough I bought the set. What I didn't consider is "I want one to use", but then realized I'm at work some times and home other times. I'm not going to carry it back & forth so one becomes two. Then my wife wanted one also, becoming the third magnifier. And you get sizes to choose from.
4842320
For most applications, I prefer oxygen-free copper. In this case, I wasn't too concerned.  This seemed like a good quality for the price. I received this on time, the packaging is good, and there were no disappointments. Great deal.