These photochromic light-adaptive lenses add a little twist to the classic Epoch Foam frame. As the light conditions change, your lenses change to block more sunlight.; 100% UVA/UVB protection (UV400) Shatterproof polycarbonate lenses with anti-fog coating High-impact polycarbonate frames Meets or exceeds ANSI Z87.1 safety standards Two-year limited manufacturer's warranty