enter the enter the mammut ultralight, with its removable airbag system in a backpack.r, this pack is nearly race weight and it comes in under two kilograms when all topped up, that means you might not have the sacrifice much speed for the additional avalanche safety. the compressed air system is the third model mammut have made and they say it is a proven design that has been credited with saving lives in the field. this is obviously the kind of case made for people who are going to be visiting extreme conditions, but here is the problem, the canister inside here that blows up the air to save you in an avalanche, cannot be taken on planes because of regulations and, on top of that, it takes up so much space inside the bag that it leaves very little room for shovel blades or a pickaxe. if that is not a problem for you, then you will love the design, you can feel it is really robust and a potential life—saver. so, as well as potentially being here to save your life, i'm also here to make sure you can be both hot and cool when ever you want to be. and you can, with this.