I'm sure they fit fine. A guy on MAC rumors says they fit fine with his thick arm sunglasses. I imagine it's going to be different depending on your glasses and what you like though. My Powerbeats 2 & 3's fit fine with glasses and sunglasses. But the Powerbeats Pro say they are designed differently. In my experience with Beats, whenever they make new models, they always improve things. So if Powerbeats 2 & 3 work great, then Pro is gonna be great, I'm sure. But you might want to go try them on in the Apple store if they have them out.