The Oakley SI Gascan combines peak visual protection with the durability and strength needed for the harshest environments. The glasses use XYZ Optics, a cutting-edge technology that maximizes visual clarity at all points of view, including your peripherals. The polycarbonate lenses can withstand high-mass and high-velocity impact and the O-Matter frame exceeds the durability requirements of harsh industrial areas. Perfect for harsh climates and rugged activities, these glasses meet ANSI Z87.1 standards for impact protection while using lightweight materials for added comfort. An advanced three-point fit places the lenses in precise optical alignment, providing unparalleled visual clarity while filtering out 100% of all UV rays