Ok, let me start by saying I have a bigger than average nose that I have broken a couple of times so its a little crooked with a med size face, needless to say my search for plastic framed shades has been vast. I used the spy dirty mo shades (which fit my face/nose) for a while and like them but I always wanted copper tone lenses with a black frame which spy and many other manufactures do not make. They always seem to match up the copper lenses with the tortoise shell frame which I am not a fan of. Then along came the Kaenon Rhino's... match up any lens with any frame! The measurements were almost exactly the same as the Spy Dirty Mo and reviews about lens clarity were outstanding. When I got them I was not disappointed! They are definitely, without a doubt the best shades I have ever used. Crisp color and very comfortable to wear all day. I use them for everything... laying down spring turns, fishing, golfing, partying on the beach..everything. Oh, BTW, I bought the black frame with C12 lens.... definitely some sick shades.