What Happens If You'Re In The Field, Working Beneath A Vehicle, And A 1.1 Lb. Projectile Impacts Your Sunglasses From A 50-Inch Height? If You'Re Wearing Gargoyles Vortex Sunglasses, Nothing. They Take The Hit. You'Re Wearing Very Purposefully Designed Highly Tactical Protection. Vortex Meets Military Specification Mil-Prf-32432(Gl) For High Velocity And High Mass Impact. They Also Exceed All Ansi Z87.1+ Protection Specifications, Including, But Not Limited To, Impressive Optical Clarity. And Thanks To The Tr90 Nzz Frames, Even The Gargoyles G-Loc Hinges Are 11 Times Stronger Than Regular Tr90. The Browbar And Temples Have Co-Injected Rubber, Which Provides Comfort, Stability, Flexibility And Grip. With Anti-Reflective And Tri Tech Oleophobic Treatments, The Lenses Control Harsh Light And Are Both Water And Smudge Resistant. Vortex Is Serious Strength, Dependability And Protection For Whatever Comes Your Way.