Anon M4 Goggles + Bonus Lens + MFIA(R) Face Mask Behind the Product Precise helmet-to-goggle fit with the enhanced optics of a toric lens and the versatility to switch between toric and cylindrical lenses. The Anon M4 Toric Goggles offer a precise helmet-to-goggle fit with the wide field of view and enhanced peripheral vision of a toric lens. Our innovative Magna-TechA(R) quick lens-change technology uses powerful rare earth N52 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 toric 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. Magnetic Face Mask Integration (MFIA(R)) provides seamless face mask attachment, and full-perimeter vents maintain consistent airflow for fog-free clarity. Includes a paneled MFI face mask, a Magna-Tech goggles storage case, and an elastic lens protector. Technology Over the Glasses Over the Glass frame designed to accommodate prescription eyewear underneath the goggles. Full Perimeter Dual Density Frame Lightweight, dual-molded PC-ABS/TPU frame combines a rigid outer frame that improves lens interface performance and rigidity with a soft and flexible inner frame that maintains a comfortable fit on the face. Toric Shape Lens Toric injected lens combines the best design characteristics for enhanced clarity and peripheral vision while maximizing the goggles&'; vent volume. Anti-Fog Lens Integral Clarity Technology Anti-Fog exceeds industry anti-fog treatment standards, delivering clear vision that lasts for an extended period of time. Magna-TechA(R) Magna-TechA(R) quick lens-change technology uses magnets for a seamless and secure lens-to-frame seal that makes for easy lens changes and unsurpassed lens retention. Perceive Polarized Technology Perceive polarized lens technology provides high-contrast, glare-reducing optics for crisp and clear vision in bright conditions. MFIA(R) Compatible MFIA(R) technology (Magnetic Face Mask Integration) uses magnetic connection to quickly seal your face mask to your goggles without obstructing ventilation for a gapless setup that seals out the elements. Ramped Triple Layer Foam Ramped Triple-layer face foam is contoured to be thinner near the eyes to provide outstanding fog-free clarity. Featuring two layers of foam, including a slightly denser layer closest to the face, and a layer of moisture-wicking fleece for a snug seal and comfortable fit. Full Perimeter Venting Full perimeter vent channel maximizes airflow to bring fresh air in and move hot air and moisture out for clear vision. No-Slip Silicone Strap No-slip silicone strap keeps the goggles in place so riders can focus on the terrain. UV Blocking All Anon lenses offer 100% UV protection. Hydro & Oleophobic A hydrophobic and oleophobic coating provides unmatched smudge, scratch, and moisture resistance on the outer lens surface for clear optics and easy cleaning.