OutLaw Eyewear Fugitive TAC Black / Pathfinder 5.0 Transition - ANSI Z87.1-2015 (2 Pack)This sunglass has Extra Dark light adjusting Transition Photochromic 5. 0 day night lenses. These are the extra dark variety that get darker than the traditional type of Transition or Photochromic lenses. The transformation time from clear to dark is about 5 6 seconds. The lenses get fully dark in direct sunlight. No matter how dark the lenses are, they will always protect you from the UV radiation that causes eye damage. To extend your frame warranty