Thats a larger sack and they are trying to say it will "float" in an avolanche - well maybe - ok, but still being swept over a cliff is kinda terminal and blunt trama is the general killer more so than suffocation. I mean being smashed by ice isn't that different than being hit by a rockslide.

Except for the snow experts and people who groom slopes at ski areas, people do not take seriously the threat of avolanche slopes. I think being so cavalier as to wear one of those vests and then skiing across an avolanche prone slope believing that this baloon will save you from your folly is like speeding in your BMW because it has 7 airbags.

Jim