Magpul Helix replacement lenses are ANSI Z87+ ballistic-rated and come with an oleophobic coating to resist oil and sweat.
The lenses offer various options including polarized, non-polarized, mirrored, and non-mirrored, suitable for different lighting conditions and activities.
Specifically, the gray lens with silver mirroring is polarized, ideal for very bright conditions, and allows 11.4% light transmission.