Super Light Weight, #5 shade plastic clip-on flip up spectacles are excellent for filtering UV and IR rays. They will fit almost any frame style. For Borosilicate work, these work great over
Didymium Lenses, But I would not use these alone. I Use these and I love them!! Clip-on Flip-up Shade 5.0. If you are using didymiums instead of the proper borosilicate glass eye protection and you
are not ready to purchase a proper pair, you can use these clip-ons temporarily. Should be replaced periodically. Enjoy the Light~!!