Zoggs Predator Flex Reactor, Swimming GooglesPredator Flex Reactor The Predator Flex Reactor goggles by Zoggs deliver advanced photo reactive performance for swimmers who train in changing light conditions. With a flexible frame and smoke reactive lenses, they provide clear, adaptive vision both indoors and outdoors. Reactor photochromatic lenses: automatically darken or lighten based on sunlight levels. 180 curved vision: wide panoramic view with minimal distortion for confident navigation.