Crews Law Over-The-Glasses Dielectric Safety Glasses With Gray Polycarbonate Frame And Clear Polycarbonate Duramass AF4 Anti-Fog Anti-Scratch Lens Crews Law Over-The-Glasses Dielectric Safety Glasses With Gray Polycarbonate Frame And Clear Polycarbonate Duramass AF4 Anti-Fog Anti-Scratch Lens Meets or exceeds ANSI Z87.1 safety standards