Semi-rimless sunglasses wrap around for maximum polarized viewing, and the soft rubber nose pads and flexible temples insure a comfortable fit. Polarized Lenses Eliminate Glare and Reduce Eye Fatigue. Polarized Triacetate Lenses are Impact and Scratch Resistant, Lightweight and Durable. AcuTint™ Lens Coloring System Adds Color Contrast Without Distorting Natural Colors, Allowing You To See More Clearly. 100% Protection From Harmful UVA and UVB Rays.
Bristol sunglasses from Flying Fisherman, although nominally for fishing, are great for running. Inexpensive, light, quality optics. I own two pairs, one with black lenses one with yellow lenses depending on how bright it is. Recommended.