The Smith I/O Photochromatic is the perfect option for any skier looking for the correct lens tint in any light condition. Smith's Red Sensor Mirror Photochromatic Lens is perfect for overcast, snowy, and partly sunny days, but when it turns to bluebird you can quickly swap it out for the Blackout lens. The Quick Release Lens Change uses two levers on the top frame of the goggle to lock the lens into place. The 5X Anti-Fog Inner Lens keeps you fog-free as you charge down any type of terrain, in any weather condition. The Patented Porex Filter regulates the pressure between each lens to eliminate any distortion that can be caused by big elevation changes when you vacation in the mountains. A Responsive Fit Frame that easily conforms to nearly any face shape for extra comfort in a perfect fit. Three Layers of DriWix Face Foam pull sweat and moisture off of your face when you are really getting after it, but also gives you insulation when it gets really cold out. Articulating Outriggers beef up the connection of the strap to the frame, and allow you to wear any shaped helmet when you ride. If you want a single goggle that works in any light condition, the Smith I/O Photochromatic is the one for you.