Exploring high altitudes is not always a comfortable experience but after long days of ice climbing ski trips or general mountaineering we can be sure that at least one part of our day will be cozy with the Slave - Neutrino 800 5 degree sleeping bag. It's filled to the brim with toasty 800-fill down which gives us heat at high altitudes and at low temperatures without adding a ton of weight. Besides it has special hydrophobic treatment which allows our down to maintain its density in humid conditions.