Part of the Standard Issue series for combat-ready performance, Oakley SI Fives Squared OO9238 USA Flag Collection Prizm Grey Polarized Sunglasses have several distinctive features you'll love. These Oakley sunglasses are members of a special unitthe USA Flag Collection. That means they're highlighted with stylized American flag emblems to honor the heritage of a nation founded on freedom. Unlike conventional sunglasses that stick out at the sides, Oakley Fives Squared sunglasses are designed using Condensed Cranial Geometry for a tapered architecture that feels as good as it looks. Dimensional reliefs, metal icons, and sculpturally integrated hinges take the whole idea of street-smooth style and amp it with attitude. Plutonite polycarbonate lenses filter 100% of all UVA/UVB/UVC and harmful blue light. The lenses feature Prizm technology that helps fine-tune your vision for specific sports and environments by maximizing contrast and enhancing visibility; the Prizm Grey lenses have a light transmission value of 17% and give a warmer appearance to colors, increasing contrast during everyday use. O Matter frames are lightweight and stress-resistant; Unobtainium nose pads ensure a Three-Point Fit that holds the lenses in precise optical alignment while eliminating pressure points. Oakley Prizm sunglasses come with a microfiber storage bag and a mfrs. 2-year limited coverage warranty.Manufacturer style #: OO9238. Part of the Standard Issue series for combat-ready performance Special member of the USA Flag Collection Prizm Lens Technology delivers ultra-precise color tuning in any environment Plutonite polycarbonate lenses filter 100% of all UVA/UVB/UVC and harmful blue light Lightweight O Matter frames with Unobtainium nose pads for a secure, comfortable fit Three-Point Fit holds lenses in precise alignment Includes microfiber storage bag and mfrs. 2-year limited coverage warranty