Originally posted by closetbiker
The wrap around (M-Frames?) are good for side coverage and the fog up factor is pretty good too. I think you can get them with a prescription.
I know people who swear by Oakley M-frames and I do like how they handle perscriptions... they cut the wrap and seal the Rx lens directly in... pretty slick. However, the Oakleys didn't fit nicely on my face. I tried different styles besides the M-frames too. I had issues with the nosepiece mainly. I eventually went with Rudy Project Kerosenes with the Rx inserts. It's not as neat looking as the Oakleys but they fit wonderfully. I really like the adjustable nosepiece. The other reason I rather like having inserts instead of permanent Rx lenses is that I'll use a combination of contacts and sunglasses when I'm road biking (I keep a contact case and the Rx insert in my jersey just in case) however, I don't dare wear contacts when mountain biking.