X2 Xcess Indoor/Outdoor Safety Eyewear – a dynamic, sports style spectacle with a premium frame for ultimate fit and comfort Optical Class 1, highest quality clear vision polycarbonate lens Frame Mechanical Strength FT – withstands low energy impact from high speed particles at extreme temperatures Soft nose pads and dual technology arms provide ultimate comfort and non-slip fit Lightly tinted silver flash Anti-Scratch coated, close fitting PC lens, with temple wrap for maximum protection Additional UV Filter blocks harmful ultraviolet rays Visible Light Transmission VLT=64%