There are reasons why the Morph Down range are best sellers. Perfect for fighting off the cold as you scramble out of your tent at dawn, or struggle down in biting winds after you've just summitted. This is a jacket leading the way with next generation construction in its 800 fillpower goose down filled micro baffles. Extremely warm for its lightweight stature, and highly compressible, it's easily tucked away into its own pocket. Not put off by the damp, the Durable Water Repellent (DWR) coating helps to guard against wet weather.
If you're going out in heavy rain you'll want to be protected with a waterproof shell. The North Face are masters in this field too.