Smith Ski Goggles 4D Mag XL 0JX 4B Black ChromaPop Everyday Blue Mirror & CP Storm Blue Sensor Mirror give you the widest field of view yet, at 13% larger than the original 4D MAG, combining BirdsEye Vision and ChromaPop optics to enhance contrast, clarity and depth perception so you can confidently spot every ridge and terrain change. The XL frame offers a roomier fit and is OTG (over-the-glasses) compatible for added versatility, while the MAG lens-change system uses magnets for fast, secure swaps in changing light. A 5X anti-fog inner lens, AirEvac ventilation and three-layer DriWix face foam work together to maintain a clear, comfortable, fog-free experience all day. The ultra-wide silicone-backed strap and QuickFit adjustment ensure the stay securely in place, and they integrate seamlessly with Smith helmets for optimized airflow and performance. These provide 100% UVA/UVB protection and come with two lenses, a protective hardcase, and a microfiber goggle bag with a spare lens sleeve.