I have a big head, and at first they were a little tight around the temples, but after I bent the arms a little bit they fit great. The optics are incredible in these. I got them off steepandcheap for the price they're selling now. They look super slick too, they have a great, classic look and they stay on your face pretty well too.
This rack is great! I've had it for 3 years and its been working great. I bought it because i had a lefty and it is perfect. I like it much better than the yakima equivalent, it seems much more secure because you have much more adjustably over the yakima.