We like Smith's Shift MAG Photochromic Sunglasses because they're dialed in for speed. They give runners and cyclists alike every advantage so we'll never be caught without clear optics. The color-enhancing ChromaPop lens enhances color and contrast to make details pop, and a medium fit provides larger coverage. Megol temples provide non-slip grip so glasses stay in place, and two-click position adjustable fit Megol nose pads do the same.