What does it kean when a pair of sunglasses says they are polarized?

they block your eyes from the sun and your lenses get black black and when you go in the shade or inside you can see your eyes and your lenses are normal like anyother sunglass

Light reflected from surfaces such as a flat road or smooth water generally is horizontally polarized. This means that, instead of light being scattered in all directions in more usual ways, reflected light generally travels in a more horizontally oriented direction. This creates an annoying and sometimes dangerous intensity of light that we experience as glare.

Polarized sunglasses reduce glare reflected off of roads, bodies of water, snow, and other horizontal surfaces.

Polarized sunglasses cut glare and haze so your eyes are more comfortable and you can see better.

Polarized lenses contain a special filter that blocks this type of intense reflected light, reducing glare.

You are read more in detail at site below:

Of course not all it will do is make your friends jealous, enjoy it girl! ;)