The North Face Khumbu Jacket - Women's 2009: Perfect for brisk fall treks, The North Face Khumbu Jacket is a soft, midweight fleece that wears equally well alone, or as an insulating layer. With zip-in capabilities, this comfortable jacket can easily be combined with an outer layer for added warmth in freezing conditions. The North Face Khumbu Jacket is proven to be versatile in harsh freezing temps, or cool fall nights.