I am very happy with gravity clip quad frames ,i can use it has my UV/blue ray protection, sunglasses (polarized ),night vision,Photo chromatic ??

  The fact I on my third pair of gravity sunglasses in 6 years proves this is durable and high quality stuff ..... Gravity is one of those rare brands that provide good quality at a reasonable price, I hope it stays this way.

  Exceptional quality sunglasses that are surprisingly affordable. I own a few pairs now and am amazed by the quality of their polarized lenses. This brand is right up there with the best!