The terrain-defining clarity of Perceive optics and the simplicity of M-Fusion for fast, easy lens changes. The Anon Sync Goggles offer the terrain-defining clarity of Perceive optics and the convenience of our M-Fusion magnetic latch system to secure and guide lenses into place. Full-perimeter venting ensures maximum airflow for a clear, fog-free view in all conditions. They are over the glass compatible for wearing with eyeglasses and include a bonus lens for cloudy conditions, an MFI® face mask, plus a microfiber bag for storage and lens cleaning. Medium Fit, M-Fusion Unisex frame design fits medium and large faces; Helmet compatible; Includes bonus lens, MFI® face mask, and microfiber goggle bag; M-Fusion combines the simplicity of magnetic lens alignment with a magnetic latch system that makes lens changes a snap. Perceive Lens Technology 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. Cylindrical Lens, OTG Cylindrical injected lens design reduces peripheral distortion; Over the Glass frame designed to accommodate prescription eyewear underneath the goggles. Anti-Fog Integral Clarity anti-fog technology exceeds basic anti-fog treatment standards, delivering crystal-clear vision that lasts; Wall-to-wall vision incorporates optimal optics in a low-profile frame that utilizes 40% thinner face foam for an ultra-close fit. Maximum Airflow Full perimeter vent channel maximizes airflow to bring fresh air in and move hot air and moisture out for clear vision. Goggle Returns: Please note that goggles are not eligible for returns or refunds if the lens film has been removed.