Oakley SI Fives Squared OO9238 Prizm Maritime Collection Iridium Mirror Polarized Sunglasses Product Details Part of the Standard Issue series for combat-ready performance, Oakley® SI Fives Squared® OO9238 Prizm Maritime Collection Iridium® Mirror Polarized Sunglasses have a look that soaks sophistication in adrenalin. These Oakley sunglasses are members of the Prizm Maritime Collection, a special kind of ocean sunglasses that originated from a request by Special Operations personnel operating in an open ocean environment. Combining High Definition Optics® (HDO®), Prizm Lens Technology, and Oakley HDPolarized® Technology, Prizm Maritime polarized lenses reduce glare and enhance contrast on the ocean's surface. Plutonite® polycarbonate lenses filter 100% of all UVA/UVB/UVC and harmful blue light. Ideal for Marines, Coast Guard, and more, the lenses feature 14% light transmission and are engineered to reduce glare and separate colors to give you better visibility on the ocean horizon. Iridium mirror lenses regulate glare, reflection, light transmission, and light absorption. If you've had trouble with the fit of other sunglasses, try these! 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 complete the package. O Matter™ frames are lightweight and stress-resistant;