Product Description The Smith I/O MAG™ combines the quick and secure Smith MAG™ interchangeable lens system with ChromaPop™ lens technology delivering you complete optical clarity. The MAG™ system blends the convenience of an interchangeable magnetic lens system with the security of a quick lock detachment. The I/O MAG™ includes two lenses—a bright light and a low light performance lens—with ChromaPop™ clarity and Carbonic-X durability. Additional features include AirEvac™ ventilation for fog-free integration with Smith helmets, a revolutionary 5X™ anti-fog inner lens treatment, and a Responsive Fit™ frame designed for a contoured face fit. The I/O MAG™ is your best companion for an epic day on the mountain.