Elvex Avion SlimFit Safety Glasses have a slimmer design ideal for smaller or narrower facial profiles. Its frame is 10mm slimmer than the standard Avion. Also features a full panoramic view and ballistic protection. Complies with ANSI Z87.1-2010 and CE EN-166. Vo Ballistic Rated: Tested to US Military standard MIL PRF-31013, Vo impact resistance requirement of 640 feet per second, 4 times the ANSI Z87 standard.