Transitions XTRActive is the darkest Transitions lens available for everyday use. This lens is intended to be in sunny conditions where the lens needs to provide an extremely dark shade at all temperatures as well as fully bright indoors. Like the standard Transitions lens, Transitions XTRActive offers the convenience of wearing the same glasses both indoors and outdoors Provides automatic protection against UV and HEV radiation as well as reflection. In addition to activating the photochromatic reaction by UV rays (the invisible part of the light spectrum).

Transitions XTRActive lenses are also activated by the visible spectrum of light. This is why it has the ability to darken behind the car's windshield by up to 50% darkening. The lens reaches 90% darkening at 23°C and 80% at 35°C. Unlike the Transitions Signature, the Transitions XTRActive has a slight gray-green shade, even indoors. The speed of returning to the transparent state is slower with Transitions XTRActive. After activating at 23°C, the Transitions XTRActive lens returns to 30% darkening in ten minutes compared to five minutes for the Transitions Signature Gen 8.