The Patagonia Tres Down 3-in-1 Parka is built around a simple premise: one piece that handles the full swing of a cold-weather day. The H2No Performance Standard shell blocks wind and precipitation while the 700-fill recycled down liner keeps warmth locked in and lofted when it matters most. The liner zips out and wears on its own, so the system adapts to the day rather than forcing a choice at the trailhead. What Our Gearhead(R) Experts Are Saying:"I wear the liner alone on dry days when I just need warmth, then zip it into the shell the moment the weather turns. One parka that covers the whole range without carrying two jackets."