WHEN YOU’RE AN elite runner, something as small as ill-fitting sunglasses can distract you from the task at hand—covering leg-deadening distances as fast as humanly possible. Two common pain points, even for high-end shades, are the bridge of the nose and above the ears. For the 2016 Olympics, Nike teamed up with designers at VSP Global and optics gurus at Zeiss to create a pair of sunglasses that don’t work, or look, like the sunnies you wear.