Designed to fit Anon M5S goggles.FEATURES: Perceive lens provides high-contrast vision and terrain defining clarity in just about any light condition; A hydrophobic and oleophobic coating provides unmatched smudge, scratch, and moisture resistance on the outer lens surface for clear optics and easy cleaning. Toric Injected Lens combines the best design characteristics for enhanced clarity and peripheral vision while maximizing the goggles vent volume. Magna-Tech quick lens-change technology uses a magnetic interface for a seamless and secure lens-to-frame seal that makes for easy lens changes and unsurpassed lens retention. Integral Clarity Technology Anti-Fog exceeds industry anti-fog treatment standards, delivering crystal clear vision that lasts for an extended period of time.