+100 on the rudy project stuff. I bought a pair of USA Triathlon themed glasses last year, and won this years USAT model as well. The nose pieces & temples adjust over the ears. The lenses are interchangable, and guaranteed. They have a replacement program to replace your lenses for $20 if they scratch, for any reason. In fact, I did a faceplant in my first MTB race this past weekend, scratched a lens, and they'll be replacing them even though it was clearly my fault.