Crowbars but with a quick change lens
I previously had crowbars and I was basically looking for a similar goggle, but with an interchange-able lens (for changing light, massive powder stack etc), which is exactly what the airbrakes are.
Being like the crowbars they suit a fat-melon head like mine! They are a large profile goggle.
The lens changing is extremely simple, I've had no problem with the seal between lens and goggle frame (as other reviews suggest, I'd send it back if that was the case).
Ferchrissakes don't complain about them fogging if you hike with them on, that happens to any goggle.
I have a smith vantage helmet and they fit fine together.