I liked these sunglasses at first -- stylish & fun -- ...
929356
I liked these sunglasses at first -- stylish & fun -- but their frame quality didn't live up to its liking. It grew weak in a couple of months and broke off in half. So I'm here to say that I would suggest buying something else, and a pair of sunglasses that is a little more sturdier and has more balance to its weight. Also, the cloth "case/cover" doesn't protect it for nothing. I don't know why it's given with the product other than to cover it during shipping or something. You would need to buy a good, hard sunglasses case for these.
2511406
I loved these sunglasses but 2 yr and 3 mo after purchase, just outside of the 2 yr warranty period, the lenses developed some type of problem causing terrible blur and glare in bright light (which is when you wear them, right?!) making them dangerous to drive with. I could US service and since they are just outside of the 2 yr warranty period, they are not willing to service them and they do not sell replacement lenses for them so they are basically throw away. The service rep offered a new pair for about a $15 discount over what they are currently selling for new on Amazon, but what is the point with that unless you want another pair of expensive sunglasses that you will have to replace in another two years.

So, if you don't mind buying new sunglasses every two years, go for these - they are great - very comfy and light weight. However, if you don't want to buy new ones every two years, then buyer beware because their service, at least their US service, is awful and they don't sell replacement lenses (if anyone knows where to find replacement lenses, I would love to know).
3003008
The lenses are great -- minimal distortion and dark-but-not-too-dark. The fit is great on my face, and they stay on. This pair has good symmetry and sits square on my face.

But... after just short of a year of use, the soft plastic nosepieces have, well, not exactly melted, but turned into a squishy mass of disgusting gross stuff. Otherwise the glasses are still fine, but I'm not putting *that* on my face. Yuck. I don't think I left them in the sun. Did I maybe leave them in the car? In the glove compartment? Why didn't the rubber on the earpieces melt as well? The car is garaged too,.. and if I am going out in the heat, I'm *wearing* them...not leaving them in the car. Strange and awful.

There's no "customer support" on the nike vision web site. What do you do if your sunglasses don't live up to the promise?

[update] My pair were black with charcoal grey lenses and a very subtle indented swoosh. The new ones look completely different (and IMO kind of ugly although I never rate on personal taste), so possibly my comments about fit and finish don't apply. Maybe Nike's materials team has got better but I wouldn't bet on it. :)
2310344
So I have had these for 1 year and the arm just snapped off while in my pocket. Not a glowing start to a review, but stay with me. Up to this point (before they snapped) I would have given them 3 stars. They were slightly heavier on the lense side so they would not stay on my top of my head (i.e. if I was indoors and not wearing them on my eyes). Anytime I would bend down, they would fall off. Tension was bad, but it could have just been a screw...not sure. Then they broke. I started looking for something to replace them, disappointed they hadn't worked out better.

Now the good part. Fast forward to today. I called Spy and told them I was just outside warranty (bought them 13 months ago, with a 12 month warranty). They said "no problem" and gave me a return authorization number. I sent them to Spy on 11/14/14, regular USPS mail ($4), half expecting to get a call or email saying I was out of warranty and they had misunderstood me on the phone. Yesterday, 11/24/14, I received my new glasses. They feel lighter than the previous ones (a feature I love in sunglasses) and the tension is much better than before. There is no "front-heavy" feel to them. Thus the 5 stars. Awesome warranty, great sunglasses.

I'm not sure what was up with my first pair or why they broke exactly (metal hinge just tore out of the plastic while in my pocket and I was sitting on a bus), but I am glad I was able to get a new pair and re-evaluate them. Recommend these.
4546999
I love the style of these sunglasses!!!  Im having problems with the nose rest & the arms, they keep coming loose!!!  THESE ARE NOT GUCCI QUALITY!!!
3604031
I loved these sunglasses. They have great style, keep colors accurate and block out a lot of annoying sun rays. Sadly they broke. They seem to break on the hinge part of the glasses with the 2 pairs i've had. Despite this user error I would still recommend them.
994413
Sunglasses were delivered quickly. Fit and look were what I was looking for. Only got to wear them a couple times a week for about a month before one of the arms just detached from the body - broken. I used them very little and kept them in the hard case provided, so there is absolutely no reason for them to break so quickly after purchase - defective or just poor design. Sadly I'm outside the return window and don't have the interest in pursuing a refund, as I'm sure it will be a real hassle. In short, save yourself the 30 or 40 bucks and don't buy these.
1818919
I absolutely loved these glasses but they came apart where the arm connects to the lens and they are no longer wearable only 6 weeks into owning them. My friend had the exact same thing happen with this pair as well. I do not recommend.
2559996
Very happy with these stylish and reasonably priced sunglasses
4398981
I got these because they were fashionable. That was two years ago. I only had these for about 3 months. I never wore them daily. I would wear them while biking, and I took them to camp with me. Then after I picked them up, the screw holding the arms to the lenses was coming out. I ignored it, and soon enough, there went the arm, and the glasses fell off my face and cracked the other arm. So I taped the arm back on, and taped the other arm on the crack to prevent it from falling apart. But, It did.

***Bottom line: Don't try it. I've had many, many cheap sunglasses over the years, and its always the same problem. The arm hinge ans screw. If only it could be reinforced by metal or something. (not wire frame glasses, which BTW, Last a bit longer.)
1331142
Item looks exactly as pictured - unfortunately mine broke within 2 weeks of purchase. The pair my roommate purchase has lasted him over a year now - but that is to be expected for $11 sunglasses, sometimes you get unlucky! For the cost i would definitely consider ordering again despite the fact that my pair broke
3272378
These glasses are very stylish and I received a lot of compliments when I wore them.  Unfortunately, the cheap plastic along with a sticky hinge cause a stress fracture along the top edge the first time that I tried them on, by the end of the day there were 4 cracks in the frame. They were functional for less than a single day.
916381
Edit: 11-3-17
I made a mistake and left a review without realizing these sunglasses come with a lifetime warranty. I reached out to the company when I realized and they sent me a replacement within a week. How awesome is that? My replacement was the silver color, which for whatever reason is not as flimsy as the original pair (blue/green) I purchased. So, if you're deciding between the two, go with silver. Thanks again!

I bought the blue/green lenses and they lasted about 2 months. They're cute, but not durable.  The frame is all jacked up despite never being haphazardly tossed in my purse. The material is quite thin and it's deformed after only 2 months. I'm pretty bummed about it and it can't be bent back into original condition. Although inexpensive, I anticipated longer than a few months of use.
1126762
Great sunglasses, nice mirror effect... While it lasted.
The mirrored coating came off within a month or two of moderate use. Great sunglasses- just wish they would've stayed reflective.
148238
These glasses were stylish BUT there is a sticker on the  glasses that reads "polarized" which you have to peel off, once you do that it leaves a nice rectangular residue on the lens. Another drawback was the chrome pieces on either side of the glasses, after a day of use they fell off.... i don't recommend buying it if you are an adult, but maybe a cheap pair of semi durable glasses for kids.
1089072
At 1st I was happy with the eyeglass keepons.  They fit snugly so I wasn't worried about them slipping off or losing them.  SURPRISE!!!  I put my sunglasses away in their case.  The next day I went to use them & they were gone.  I looked at the bottom & there they were...split in half...ripped. I didn't have difficulty putting them on, so why did they tear?  They are useless & I would have given them NO STARS, but that was not an option.  Keep your money.
2692790
I really like the style of these sunglasses. In fact, when they first arrived, I thought about buying another pair immediately. However, they broke in less than a week (while they were just hanging out in my purse). Since then, I bought a pair at the Dollar Tree and those ones have held up for 3 weeks. (not as cute, though)