3M BX Dual Readers 2.5 Diopter Safety Glasses With Black And Silver Polycarbonate Frame And Clear Polycarbonate Anti-Fog Lens 3M BX Dual Readers 2.5 Diopter Safety Glasses With Black And Silver Polycarbonate Frame And Clear Polycarbonate Anti-Fog Lens Polycarbonate lens with three lens angles Adjustable soft tip temples Soft nose bridge Bifocal readers with magnification diopter: +2.5 Lens absorbs 99.9% UV Meets the requirements of CSA Z94.3-2007 and the High Impact Requirements of ANSI Z87.1-2003