Kaenon? The best Sunglasses you can buy.
Sweet style and performance. Even though these are not the sport specific frames they have been working great for me mountain biking.
I have seen the SR-71 material and it is unique. It is actually flexible and impact resistant, but also has the optical clarity of glass.
I ordered the Copper 12 tint. It gives incredible contrast and is not too dark in shaded conditions.