The Patagonia Women's Duete Parka is a 600-fill down winter jacket with the power to stand up to the daily grind. The outer material is a waterproof/breathable H2No Performance Standard shell which offers both durability and mobility (in addition to storm protection). If you don't know about the insulating powers of goose down, all you need to know is that nothing traps body heat better for the weight, and it is extremely compressible. Geese having been using it for years and they're thriving.
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