They are only sold in Europe right now for nearly $600, but the concept is cool. I wonder if the U.S. will every approve it. 
<iframe src="//player.vimeo.com/video/43038579" width=“500” height=“281” frameborder=“0” webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href=“http://vimeo.com/43038579”>The Invisible Bicycle Helmet | Fredrik Gertten</a> from <a href=“http://vimeo.com/focusf”>Focus Forward Films</a> on <a href=“https://vimeo.com”>Vimeo</a>.</p>
Not sure why the video won’t embed, so I included the link below.
Hmm…looks interesting.
I only wished they showed the last few seconds of the video (where you actually see the invention in action) at the very beginning. Through most of it I was wondering if I was ever going to see it.
Like one of those cheap monster movies where at the end through 2 hours of watching basically lame scenery shots and barely visible parts of the monster, you see a total of a minute or so of the actual monster.
Discussed here: Full Face Helmets
They were tested in a German TV-show. For bicycling they work quite well, but I don’t think they’ll work for unicycling.
One of the major arguments seems to be that helmets are uncomfortable which in my opinion isn’t true at all. Especially in summer I am sure a helmet would be much more comfortable than something wrapped around my neck (= way too hot). The only real difference is that with such a helmet your hairstyle doesn’t get destroyed. 
My comments from the other thread.
And as mentioned, as far as comfort is concerned helmet > huge turtleneck.
And $600, lol. I wonder if that thing can be reset or if it’s $600 per pop.
Another observation… on one site I saw a video of some guerrilla marketing they conducted. They staged an accident in a public place and showed the thing in action. One of the comments correctly pointed out that the person wearing the helmet always rolled, avoiding a head impact. Makes sense, no unnecessary risks and all. Their point was that the marketing successfully displayed that the thing deploys fine but did little to convince of the actual safety merits of the device. I’m sure they couldn’t market the device unless it had been vetted. Still I wonder… it’s just air in a bag. If the impact is hard enough it seems like your head would displace the air and your head would then make contact with whatever surface you crashed into. Again, I’m sure they fully tested the thing.
I do that a lot, and the amusing/ironic thing is that it’s almost always a grazing hit that my bare head - an inch smaller without the helmet - wouldn’t have touched. The helmet messes up your sense of exactly where your head is (proprioception).
But there was that one time I didn’t see the branch at all, and ended up on the ground without any idea of how I got there…
^Yeah, same here. Mostly branches that wouldn’t have been hit without the helmet and just like in your case except this one time…
I’ll stick to the traditional helmets for those one times.
First off, I don’t consider that a helmet. It is a cushion that may or may not be very tough. Also, the idea is to get rid of the uncomfortableness of a helmet but they’ve replaced this with a collar that looks more uncomfortable then a helmet and makes you look girly. Right, I’ll stick to normal helmet when I use one.
Gives “Air Head” new meaning! 
As I’ve stated on Facebook, these are for commuter bikes, no use for Any extreme biking. And same applies to unis.
It may work for calm commuting, nothing more. I would anyway worry that it pops out at UPD that has no risk of banging your head to the ground. Just the movement and forces may be similar enough.
I think they’re pretty much aimed at women who don’t want to mess up their hair. (Or overly-fashion-conscious guys.)
I think the idea is brilliant, but not necessarily the around-the-neck implementation. I’d want inflatable cushions built into the helmet itself… making the helmet smaller overall but much bigger and softer at impact-time. In that form I’d love it for commuting or touring… well I would if I did those things anyway. 
The only benefit I’d like from this is having a cooler head.
When I take my helmet off after a ride, the sweat on my head can finally do it’s job and cooling affect is significant. If I could have that during my ride I think I could ride longer and harder.
Helmet ventilation holes help, but not enough. Though I haven’t tried many different helmets.
Totally agree with the branch comments. My helmet has only protected me from tree limbs. I’ve never hit my head in a fall… at least not that I can remember. 
I also think wearing a helmet makes you look like an official cyclist. People will treat you differently if they think you’re serious about the sport.
Problem solved:
On topic: Those neck airbags look sillier than a real helmet… The guy who runs you over would probably die before you do because he’s laughing so hard!
Are they activated by force/angle? Would they be set off from stepping off the back of the uni (Or even leaning forward to gain speed)?
I wonder if they’d have similar problems that come with car air bags. Air bags can sometimes be more dangerous, depending on the angle at which you hit them, and your height. Plus, even a helmet can’t prevent concussions. Your brain can still bruise from the helmet’s impact with the ground, so I doubt these are concussion-proof.
Cool concept. I think you guys are all right, though. Not for extreme riding, UPDs, or people who don’t care much about how their hair looks after the ride.
yeah…chiming in with the skeptics on this one. Neat idea in principle, but wondering about the level of technical overkill and the wisdom of supplanting a simple solution with a highly complex one. Conventional helmets work, even if they do tend to spoil your wind-blown, runway model looks. How many potential points of failure on those airbags, anyway? 
I think the price of these things speaks a world on the ‘wisdom’ of supplanting the good old lump of material strapped to your skull 
I think I’m going to try and get a reflective sticker with the words “Official Cyclist” for my helmet.