The special injected frame offers supreme user comfort as well as durability. Expanded Visual field. Cross Vent technology keeps air flowing in and moisture out. Moulded 2mm poly carbonate lens provides great impact protection. These goggles meet ANSI Z87.1+ impact standard. ESAB Revolution UVIR Shade 5 is CE certified in addition to EN 169:2002 Optical Radiation (Welding).