I have a pair of Adidas Evil Eye for small faces and quite like them particularly because the ear pieces don't stretch when you wear them on top of your head They do have interchangeable lenses but you have to order them separately. If I were looking to replace them now I would think about getting a pair of photochromic lenses though which seem like a great idea. The idea is that they adjust for different light conditions automatically. I haven't tried them though so would be interested to hear from anyone who has. Specialized makes a pair for road and one for mtb (grey vs. red based tint) in a small and large size. Tifoso also had some that were quite reasonably priced. I think Rudy Project makes them now too for their Jekylls and probably some of their other styles.

Mel