how to choose sunglass

seems to me its a hard task to choose a sunglass from thousands.there are some websites offering services to choose by taking shoulder to head photo and then trialling various model on that pic.
u should accompany at least a light tongue friend who will give u right feedback about ur view with a glass.consider also lighting of the shop.

dont buy on first outing for shop.come back home,think,re-assess then take the decision.chances of getting ur desired thing thus increases.

along with fashion a sunglass serves to protect eye.so be sure of ultra violet protection.
my favorite brand is rayban though i have none yet.before going to shop surf internet for some times.surely it will be helpful.