These Anon 2021 M4 goggles are seriously packed with features and provide the unique ability to swap between cylindrical and toric lenses for maximum versatility, this is the Toric version. This M4 includes a spare Toric lens, both lenses are powered by the new Perceive lens technology which improves contrast for optimum clarity of vision on the mountain, certain to have you prepared for all light conditions. Using the MAGNA-TECH® quick lens change technology it is incredibly easy to switch lenses out and the Toric shape provides plenty of peripheral vision. With Magnetic Facemask Integration (MFI) magnet technology, there is the option for integration with the Anon MFI Facemask which comes included, easily able to snap seal to the base of the goggle's frame to protect your face and neck from the elements. The goggle also offers helmet-to-goggle integration with Anon helmets for maximum coverage.