Arena's newest addition to the Cobra goggle family, the Cobra Swipe Mirror. Finish fog-free with the most advanced anti-fog protection ever! arena’s new Swipe Anti-Fog Technology extends the life of your goggles by restoring the anti-fog protection to pristine condition. Activated by gently swiping the inner surface of the goggles’ lens with fingers to bring pristine clarity to the surface of the goggles’ lens.