Crews Klondike Magnifier 2.5 Diopter Safety Glasses with black matte finished nylon frame are designed to provide enhanced comfort as well as impact protection. Glasses have dual bi-focal clear lens that filters out 99.9% of harmful UV rays and provides enhanced protection. Spatula type temple with 5-position ratchet action allows easy adjustment for a contoured fit. These glasses ideal for head and eye protection in industry have a soft, pliable TPR nose pad that provides a comfortable fit for a variety of facial profiles. Lens comes with an exclusive Duramass technology that provides resistance to scratches. Glasses with 85% visible light transmission meet ANSI Z87, CE EN166 standards and are sold as 72 pairs per case.