Snowpulse Avalanche Airbag
By Rocky Thompson on July 2nd, 2007Snowpulse’s Life Bag <snicker> is a manually inflatable airbag designed to protect your head, neck, and life in an avalanche. If you get caught in a slide, you’d pull the ripcord to inflate the head bag in less than three seconds. It’ll stay inflated for about 90 seconds, when the air will empty out so you can look for your friends. If you get trapped under the snow, the bag’s deflation will give you some headspace during your last minutes on earth.
via GetOutdoors

I can see some dude having one of those at the canyons and doing the skim or swim with that inflated.
sorry but my shovel has better taste