The 31-30135 Laser Safety Glasses by Honeywell (formerly Sperian) are for Red Diode Alignment wavelengths. It has LGF Full View frame with aqua color polycarbonate lenses. 52 % VLT (visible light transmission). The lenses are coated for anti-fogging. The LGF Full View frame features a one-piece polymer lens with integral molded side shields and adjustable earpieces. It fits over most prescription eyewear and meets ANSI Z136.1, Z87.1 and EN208 requirements. CE Certified.