Pour a mild, non-detergent cleaner that is made especially for down into your washing machine and start the machine using cold water and set on a gentle cycle.
Place your North Face jacket, turned inside out, into the water and wash it.
Put your jacket into the dryer along with several clean tennis balls. Set the dryer on low and toss the jacket with the balls. The balls will bounce around the jacket, ensuring that it will become fluffy and soft once the cycle is done.