The Oakley Bottlecap Sunglasses feature an open-edge design and lenses that change to match light conditions.
Shield your eyes with the Oakley Bottlecap Sunglasses Activated by Transitions. Oakley partnered with Transitions Optical to create sunglass lenses that ultraviolet rays trigger to darken or lighten. As you sit at a café in bright morning sun, the lenses darken to let less light reach your eyes. When you walk your dog in overcast conditions, the lenses get lighter. The Bottlecaps feature an open-edge frame design so you have unhindered downward views. The lenses wrap around to fully protect your eyes and provide a shaded peripheral view.
I just scored these. I have had problems not being able to find a lens that works well for late afternoon into early evening. But these solve the problem. My eyes stay comfortable in bright sun, and I have contrast when I run out daylight in the early evening. Its like two Oakley's in one awesome package.