Uvex Astro over-the-glasses (OTG) safety glasses are designed for students and instructors who wear prescription eyewear. The larger version will fit over most spectacles. Features soft Duoflex® comfort cushions on temples and a scratch resistant clear Ultra-dura® lens. Red/White/Blue frame. Replaceable Lens available. Meets ANSI Z87.1-2010 standard and is certified to the requirements of the CSA Z94.3 standards.