Assembled in the USA. PATENTED HIGH DEFINITION OPTICS (HDO): Oakley HDO provides superior optical clarity and razor-sharp vision at every angle as well as clarity and protection against impact and UV light, filtering 100% of UVA, UVB, UVC, and harmful blue light up to 400mm. LOW BRIDGE FIT: Low Bridge Fit frames are designed for those with high cheekbones and lower nose bridges, for comfortable all day wear. OAKLEY PRIZM GREY LENSES: Prizm lenses are designed to enhance color, contrast and detail. The grey tint on these lenses make it perfect to use when there's strong sunlight or intensified light that is reflected off water or snow. O-MATTER STRESS RESISTANT TECHNOLOGY: O-Matter frames are lightweight and durable, injected with molded thermoplastic that provides improved strength and flexibility to withstand shifting or deforming over time.