Smith Optics "Outside The Wire" Goggles Field Kit, with Clear Lens Installed & Spare Gray Lens, Black Ballistic impact protection--lenses meet and exceed MIL-DTL-43511D and ANSI Z87.1 standards. Superior field of vision Anatomically optimized design for seamless helmet integration and face fit. Tapered Lens Technology for distortion free optics. Scratch resistant and anti-fog coatings on all lenses.