If I were caught in a survival situation where I needed a very warm and durable coat, 'ya know, I wouldn't want my fancy down stuff. I'd want my bomb-proof Carhartt (ranch-wear type gear). Warmer than all get out and indestructible. But heavy. It's the heavy and non-compressible part that gets you. You wouldn't want to pack one and carry it somewhere. But if I were already "somewhere" and happened to have the Carhartt with me, I'd choose it over the fancier coats any day.