The Anon M4 Cylindrical Goggles offer a precise helmet-to-goggle fit with the wide field of view and low-profile design of a cylindrical lens. The Low Bridge Fit features enhanced face foam that tapers to 5-7mm thicker at the nose for improved fit. Our innovative Magna-Tech® quick lens-change technology uses powerful magnets to make lens changes easier than ever. The M4 offers the unprecedented versatility to switch between toric and cylindrical style lenses. This edition of the M4 includes two cylindrical lenses featuring Perceive optics for high-contrast, terrain-defining clarity and our best anti-fog treatment for crystal clear vision through a wide range of conditions.