The men’s Anon M3 goggle features Magna-Tech Quick Lens Change Technology, using 18 powerful neodymium magnets to make lens changes easier than ever. Cylindrical Lens Technology provides maximum field of vision without distortion, while SONAR lens technology by ZEISS enhances contrast for the best possible definition and terrain recognition. Magnetic Facemask Eingliederung (MFI) seals Anon’s MFI facemask accessories (sold separately) to the goggle non…snap. Full perimeter channel venting ensures maximum airflow for clear, fog-free vision in all conditions. Includes spare lens for cloudy conditions, compression-molded case, and microfiber goggle bag for storage and cleaning the lenses.