When the cold weather is looming, there's no question that a packable mid-weight insulated layer should be in the pack. The Rogue Jacket is exactly that. Lightweight enough to pack into anything, but insulated with 100 gram of polyester fill to add that extra bit of warmth when needed. Made of a mid-weight nylon exterior fabric that is both wind and water resistant, this jacket will keep you warm without that extra pack weight bringing you down.