Transitions XTRActive polarized is currently the only photochromic polarized lens. The product extends the Transitions XTRActive product line with the added benefit of variable polarization. Transitions XTRActive polarized lens is clear with a hint of protective shade indoors, darkens up to 50% in the car, becomes extra dark, and polarizes outdoors. Transitions XTRActive polarized lenses offer superior protection, clearer vision, and a better view of the true color. Transitions XTRActive polarized lens is an extremely dark lens in the photochromic category.