From the Manufacturer
Reflective glare increases eyestrain and creates a faded effect on surrounding colors. A high quality polarized lens eliminates all reflective glare that hits the lens, reducing eyestrain and allowing a crisp view of the surrounding environments.
Dewalt now offers a polarized version of their eyewear called the GRP high performance safety glasses. A high quality polarized lens eliminates all reflective glare that hits the lens, reducing eyestrain and allowing a crisp view of the surrounding environments. This safety glass also meets Z87.1 safety regulations