Anon M3 Goggle. 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. Magnetic Facemask Integration (MFI®) compatibility 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 Spare low-light lens and micro-fiber lens goggle bag for storage and cleaning the lens.