Certified eclipse glasses for direct solar observation. they reduce the intensity of sunlight and filter uv and infrared radiation for safe viewing of the eclipse. they comply with iso 12312-2. warnings for use: inspect these glasses before use. do not use them if they are damaged, broken, or punctured. do not use them with other optical devices. they are not a toy. children should only use them under adult supervision. continuous use is limited to 3 minutes with intervals of several hours. do not move them while in use. do not use these glasses if you have eye problems or after eye surgery. they are suitable for direct solar observation. do not observe the sun directly without using these glasses