Safe Solar Glasses and viewers are absolutely safe for direct solar viewing of solar eclipses. The lenses are made of an exclusive scratch resistant optical density 5, "Black Polymer" material. These shades are "CE" and "FDA" certified which meets the transmission requirements of scale 12-16 of EN 169/1992. Eclipse Shades filter out 100% of harmful ultra-violet, 100% of harmful infrared, and 99.999% of intense visible light.