Swap MAG Safety Glasses allow you to swap out the temples for a head strap, or vice versa, with the simple push of a button. The Swap MAG offers the same great features as the original Swap, but now in a bifocal version. Lenses come in diopter strengths of 1.5, 2.0, and 2.5, and are available with anti-fog coatings. Venting channels also help prevent fogging, while the foam-lined frame blocks dust and debris. Swap Mag glasses meet ANSI Z87.1+ and MIL-PRF-31013 impact resistance standards.
What does ANSI Z87.1+ mean?