When one thinks of Sports performance eyewear and sunglasses, we envision a wrap type of frame that is made for every type of sport. Today like medical professionals, sport performance sunglasses are becoming specialized. For example District Vision sunwear for runners which they call a Performance Eyewear System. The frames feature D+ lens technology, rubber/titanium nose pad and temple tips.
If you are a runner and like the concept, you can purchase online or any of the retailers they have listed.