Econo Bonding Eyewear, One piece plastic lens design with detached side shields. Optically correct, non-distorting and lightweight while providing a secure fit. Filters over 95% of blue and UV light. Perfect for use as overglasses. Impact and stress-resistant material. Meets the ANSI Z87.1-2003 standard for safety eyewear, 1 pair. Single pair of bonding glasses