The IO ChromaPop snow goggle has quick interchangeable lens change system. The system solves problems coming from light and weather changes. The lens can perform in both bright light and low light. This goggle features spherical carbonic-x lens, 5X anti-fog inner lens, and TLT(Tapered Lens Technology) for the best optical vision. SMITH ChromaPop enhances color and contrast and help you see the view with clear vision. Get it for the better performance of your favorite sport.