Interesting, I was half joking, but I did fall into the the rabbit hole looking up the 2 airbags you mentioned. The avalanche airbag looks like it's just meant to protect the head from whiplash. I didn't see how it would prevent from being buried or protecting the head when slammed face first.
The dainese airbag site[0] just sent me into "is this a joke" mode with the video included on the page. It just has the feel of a parody. That poor guy doesn't look comfortable at all. The editing makes it have that intentionally bad continuity used when making parody infomercials. The arm is awkwardly posed with hand in pocket, cut to hand waving, cut back to hand in pocket. It's very hard to take seriously.
There is no special need to protect the head from getting slammed in an avalanche. What the bag does is that it protects you from being buried and crushed beneath a ton of snow. Both by making you "float" higher when caught in the avalanche. But also by taking up space when buried, so that when it deflates you're in a "pocket" and not getting crushed.
Haven't seen the video before. But In often see racers being "bulky" when skiing down after an accident. Looks funny, but it's useful.
The dainese airbag site[0] just sent me into "is this a joke" mode with the video included on the page. It just has the feel of a parody. That poor guy doesn't look comfortable at all. The editing makes it have that intentionally bad continuity used when making parody infomercials. The arm is awkwardly posed with hand in pocket, cut to hand waving, cut back to hand in pocket. It's very hard to take seriously.
[0]https://www.dainese.com/us/en/dainese/smart-jacket.html