The Uvex XC features an extended wrap-around lens for extra cheek and side coverage. A new Rx lens insert holds Rx lenses firmly in place. Soft flexible nose fingers conform to fit the user while adjustable temples offer a custom fit. The glasses are available with cushioned temples and in a variety of replacement lense options. The Uvex XC passes ANSI Z87+ and CSA Z94.3 standards as well as the military VO ballistic test for impact. The glasses come with a lifetime frame guarantee.