The Anon Women's WM1 + MFI Snow Goggle features Magna-Tech® Quick Lens Change Technology, which uses 14 powerful neodymium magnets to make lens changes easier than ever. Women's-specific design ensures the best possible fit and comfort. Spherical Lens Technology mimics the curvature of the human eye for superior optics, while SONAR lens technology by ZEISS enhances contrast for the best possible definition and terrain recognition. Magnetic Facemask Integration (MFI) seals the included Anon MFI facemask to the goggle in one quick snap. Full perimeter channel venting ensures maximum airflow for clear, fog-free vision in all conditions. Includes an MFI facemask, a spare lens for cloudy conditions, a compression-molded case, and microfiber goggle bag for storage and wiping the lenses clean. The Anon Women's WM1 + MFI Snow Goggles are a great choice for long days on the mountains.