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 plus a microfiber bag for storage and lens cleaning.Features:- Unisex frame design- Wall-to-wall vision incorporates optimal optics in a low-profile frame that utilizes 40% thinner face foam for an ultra-close fit- Triple-layer face foam features 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- Thermoplastic polyurethane frame is durable and lightweight but remains flexible in cold weather- Fits medium and large faces- Helmet compatible- Over the Glass compatible frame designed to accommodate prescription eyewear underneath the goggles- M-Fusion combines the simplicity of fast lens alignment with a magnetic latch system that makes lens changes a snap- PERCEIVE lens provides high-contrast vision and terrain defining clarity in just about any light condition- Cylindrical Injected Lens designed reduces peripheral distortion- A hydrophobic and oleophobic coating provides unmatched smudge, scratch, and moisture resistance on the outer lens surface for clear optics and easy cleaning- Integral Clarity Technology Anti-Fog exceeds basic anti-fog treatment standards, delivering crystal clear vision that lasts for an extended period of time- No-slip silicone strap keeps the goggles in place so riders can focus on the terrain- Bonus lens and microfiber goggle bag included- Full perimeter vent channel maximizes air flow to bring fresh air in and move hot air and moisture out for clear vision