These are described as black polarize lens glasses.  I was surprised by the difference and clarity of these sunglasses.  I needed dark glasses due to a fall causing small concussion which make bright lights and sunlight result in headaches.  These seem to help.  I like them well enough to use when I am able to drive again.  They came in very nice sturdy molded case with a cute print on the cleaning cloth and a guitar pick which I gave my husband.