FEATURES of the Anon M3 MFI Goggle Magna-tech quick lens change technology MFI technology patent pending Outlast fog management face fleece No-slip silicone strap Wall-to-wall vision anon. Cylindrical lens technology Over the glasses compatible Triple layer face foam is moisture wicking and provides a perfect, comfortable fit ICT (Integral Clarity Technology) Full perimeter channel venting ensures maximum airflow and helps keep goggles clear and fog-free Lightweight thermoplastic polyurethane frame