Oakley's design for possible new face shields

[George Cantstandya]

Looking closer at the helmet above, maybe they are not holes and just a bit cut out to make it lighter.  Even then with no holes or whatever where do you think all that possibly contaminated heavy breathing will go?  I'm no scientist or engineer by any means but this is my guess and I'm willing to bet it won't all go backwards.   You have a form fitting helmet and even with a full visor with no holes the air has to escape somewhere.