Elvex's line of Tactical products include: Vo Ballistic rated eyewear in 3 stylish models - XTS, Acer, and Avion. XTS available with polarized lens. All models are provide UV protection and are ANSI Z87 rated. Elvex high performance hearing protection products include: Impulse filter electronic ear muff rated 25 NRR, Ultrasonic ear muff rated 29 NRR, and Quattro reusable ear plugs, rated 25 NRR, have US Military NSN #'s assigned.