Mountain Shades Redline PhotoMatic Sunglasses (Shiny Black with Clear Lenses)

Photochromatic lens automatically adjusts to the changing light conditions to darken or lighten depending on the amount of sunlight or UV exposure. Reaction time is 7 to 10 seconds, and the transmission shift is from a Category 1 (85% light transmission) lens, to a Category 3 (15% light transmission) lens. An advanced crystal is embedded in the lens resin that reacts with the intensity of the sun to create the change. The lens material is grade A polycarbonate resin for superior impact resistance with 100% UV protection and Focal point lens technology for class one optical standards. All Optic Nerve Photochromatic glasses feature non-slip rubber components and active lens venting. (L-6,7,9,12)