The men’s Anon MIG goggle features Magnetic Facemask Integration (MFI®) that seals Anon's MFI facemask accessories (sold separately) to the goggle in one quick snap. Spherical Lens Technology mimics the curvature of the human eye for superior optics. The MIG goggle is Over The Glass (OTG) compatible for wearing with eyeglasses. SONAR lens technology by ZEISS enhances contrast for the best possible definition and terrain recognition. Includes microfiber goggle bag for storage and cleaning the lens.