Clear Protective Overglasses (Box of 12) Protection against high-speed particles at extremes of temperature FT (45 m/s) UV & Sun glare protective filter Clear un tinted lenses can be used indoors or outdoors Can be worn over prescription glasses Made of high-grade polycarbonate which prevents breakage Standards: 12932-PZA-14, 10481-PZA-19, 10491-PZA-19, 10492-PZA-19 DIN EN 166: 2002-04 DIN EN 170: 2003-01 DIN EN 172: 2002-02