The North Face Men’s ThermoBall Eco Jacket is a packable jacket for cold weather hikes. Stuff it into it’s own pocket and have it in your pack. Just an average 15.16 ounces in weight and you’ve got warmth at the ready. The water-resistant synthetic insulation keeps you warm even if it does get wet, plus the recycled polyester exterior has a durable water repellent to help shed light moisture. A little insurance in questionable fall weather.