Photochromic lenses lighten and darken automatically and block all UV rays.

Serving-up precise vision for ever-changing conditions the Oakley Crosshair with Transitions Lens adjusts the amount of light that reaches your eyes. If a cloud darts in front of the sun then the lenses fade to a lighter shade. Likewise if the sun suddenly breaks through the clouds the lenses darken. Either way the Transitions® photochromic lenses block the transmission of all UV rays offer distortion-free clarity and provide high velocity impact protection. The wire frame is Oakley's thinnest ever sculpted from C-5™ alloy easily adapts to various head sizes and shapes.