Well, since you want to them to have working out, I will recommend Oakley sunglasses and smith sports optics sunglasses. First, you should know some details about Oakley sunglasses. As we know that Oakley makes sunglasses for every sport, weather condition, light condition and style, for they have lightweight, impact-resistant frames. In that way, they provide durability, and complete customization. And what is important is that they have polarized lenses, so it can be beneficial. On the other hand, Smith Sports Optics offers a huge selection of sunglasses specifically designed for sports. In general you will find interchangeable lenses and maximum coverage without neglecting peripheral vision. The nose pads and temples have non-slip rubber so they stay in place during activity. And polarized lenses are available as well. Anyway, you can just search these two kinds of sunglasses, which can be suitable for you. Just have a try.