This bag is new to the Macpac (NZ Brand) range. It was designed for the UL adventure runners. It is a fully waterproof down bag and comes in 3 different temp ratings. I love mine and for NZ conditions over two/three seasons, my bag is perfect. It’s so light (750grams), and because it’s waterproof, it works well with my tarp tent. It’s expensive but quality was never cheap. I think I might buy the Western Mountaineering Light bag for winter hut use.