I just tried some glasses under my Aerohead. My daily wear glasses fit, but just barely; so I'm guessing it depends on your frame style (wire rims: no problem, chunky horn rims: no way).

The potential issue is with the top of the temples hitting the shield. I tried some of my Oakleys, and even the clunky Jawbones fit under with plenty of clearance, since they wrap around and stay closer to my face than the daily wears.

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ECMGN Therapy Silicon Valley:
Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)

Titan, thank you. I'm using rudyproject glasses so it's closer to your Oakley. Gives me more confidence.......
I hope the same goes for vanquish.......