ESS
ESS Profile NVG Goggle
2.8mm polycarbonate. This is thicker than most ballistic screens, and it is what allows this mask to pass the U.S. military .22 caliber impact test.
The standard that matters here
The MIL-DTL-43511D, clause 3.5.10, is a .22 caliber ballistic impact test. This is a requirement of a different order than industrial standards: it does not measure resistance to workshop projection, but to a high-speed fragment.
Night vision compatible
The low-profile frame is designed to accommodate a helmet-mounted night vision device. This constraint structured the entire mask - without sacrificing the field of vision, dust filtration, or anti-fogging.
The Outriggers
These patented offsets move the strap's anchor points away from the edges of the mask. The strap then goes to the correct place around the helmet instead of being constrained by the frame - this is what makes helmet compatibility real rather than theoretical.
The perimeter ventilation
A ventilation and filtration system goes all the way around the mask. It limits fogging upstream, through air circulation, and filters suspended particles in the process. On a closed mask, this is the point that determines real comfort during prolonged use.
OpFoam foam
The facial padding is antimicrobial. For a foam in permanent contact with skin and perspiration, this is not a cosmetic argument.