best choice for sunglasses for very high temperature plus dusty city setting (in asia)

for someone who will be in asia for a month in a city with high

pollution and also soaring heat (110F with humidity)
can you suggest a sunglass that will truly fit the bill..

i checked brand names like rayban but I am not sure the are meant for rugged situations i mentioned or desert like environments. 
(the above look cheap, so i am not sure it will be durable..

(meaning 'will it last continual wear')

can you suggest any from this list pros/cons or elsewhere..
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Designer sun glasses are not worth the cost. But there are a couple of points which can be made.
1. They should be comfortable. Try them on.
2. They should be polarized.
3. If you are really worried about dust, get fitted googles. (In my opinion, not worth the trouble. Good for dust but not humidity. No sunglasses with deal with pollution.)
(I have worked in Bangladesh and Sri Lanka and visited most SE asia countries)
The ads on a site were so bad I had to copy to get what you may like to read about the top 10 glasses for high performance wear. They are fairly expensive.

The Trango, part of Native Eyewear’s new Odyssey series, has added bonuses that exceed its regular line of sunglasses. N3 lenses provide four times more infrared radiation blocking and UV protection, have a higher impact resistance, and use blue-light filtering to decrease haze and intensify visual acuity. The grippy frame uses cam-action hinges to lock the temple stretch into place and the durable, lightweight material can even withstand high velocity collisions and extreme temperatures. The full-framed, polarized Trangos are interchangeable, and clip in and out quickly.
And here are Trango sunglasses:

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Matthew GrayCommented:
In the summer, it is recommended that everyone should wear sunglasses while going out in the daytime. This tends to protect your eyes from the harmful radiations of the sun. Wood sunglasses are considered to work well at high temperature. You must choose the right type of sunglasses based on your locality.

Some other points that you can consider are listed below:

1. You should choose that pair of sunglasses that complements the facer of your shape.
2. Choose a pair of quality sunglasses which you can use for many years.
3. Consider a classy color of sunglasses
4. Prefer sunglasses with polarized lenses
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