The men’s Anon M3 goggle features Magna-Tech® Quick Lens Change Technology, using 18 rare earth magnets to make lens changes easier than ever. Cylindrical Lens Technology provides maximum field of vision without distortion, while NEW SONAR Lenses by ZEISS enhance contrast for the best possible definition and terrain recognition. Magnetic Facemask Integration (MFI®) seals your Anon MFI® facemask to the goggle in a snap. The M3 goggle is Over The Glass (OTG) compatible for wearing with eyeglasses. Includes MFI® Facemask and spare Graybird lens (select colorways only), compression-molded storage case, and microfiber goggle bag for storage and cleaning the lens.