Oakley Crosshair Sunglasses:

"Our sunglasses take shape in a world that doesn't exist. Not on paper, anyway. It's the virtual reality of digital design that lets us achieve things like Reduced Cranial Geometry. That's how we took the comfort and clarity of our full-size Crosshair frame and rendered this unique variant, perfect for smaller faces. The aviator styling comes from fly-by-wire CAD/CAM engineering and it gives you the unbeatable performance of HDO. It also offers superior impact resistance and 100% UV filtering. For extra comfort and a secure fit, the lightweight frame of C-5™ alloy includes soft UNOBTAINIUM® components that increase grip with perspiration. All three lens options are engineered to boost visual contrast to improve depth perception. The two gradient lens styles dim the glare of the sky while leaving the rest of your visual field luminous. Choose G40™ Black Gradient for flat/overcast to medium light, Black Violet Gradient for medium light, or VR28® Gold IRIDIUM® for medium to bright light."