Looks like it wouldn't do much to protect your face, it's just to prevent skull fracture. It's probably also compliant enough to reduce concussion.
The one time that I had significant damage though it was from kissing pavement - my face went into the pavement. I don't think this would help you avoid facial stitches, broken nose and teeth and orbitals, etc.
Try watch the video "slow mo", repeatedly repressing the play-pause button. Watch the shape of the air-helmet after it's been fully activated- the front of it is pretty
thick.
http://ichef.bbci.co.uk/wwfeatures/976_549/images/live/p0/21/m0/p021m0ff.jpg
http://www.fitsational.com/wp-conten...%B6vding1.jpeg
After it's been swell- it's just like a normal helmet, and even bigger and wider.
Also I noticed that the helmet comes into action ,I mean swell, as soon as the biker hit the lamp, means, as soon as the helmet's sensors recognized a harsh movement. That's really raises up the chances the helmet may protect in accident with cars.
Anyway you guys surprise me- I was looking for a bike forum- I found this site which seems really big, maybe biggest biking forum- and no thread about this swelling helmet, and no one to wear it or tried it and tell his experience?
EDIT: in these case the melmet don't open immediatly:
https://www.youtube.com/watch?v=Y7lQaw-VTfY