With cutting-edge design and superior technology, the ESS Crossblade NARO 2 Lens System Sunglasses Kit features ClearZone Anti-fog coatings and two different-sized lens/nosepiece options. These Ballistic glasses deliver a customizable, modular fit that caters to individual facial structures. The Crossblade's Tri-Tech Fit frame offers a snug fit with zero pressure points, while the advanced ClearZone Dual Flow Coated lenses eliminate fog inside and prevent scratches outside. Get precise vision with distortion-free ESSOPTICS and enjoy easy lens exchanges, thanks to the DedBolt Lens Lock pivot. The Crossblade Naro Unit is U.S. MIL SPEC MIL-PRF-32432, ANSI Z87.1-2015, CE EN 166 and U.S. Federal OSHA compliant.