The lightest, warmest hunting layer we have ever built. Derived from the patent pending down layer in our First Ascent line of mountaineering apparel, it is what Stine Bauer would wear today while hunting in the high-altitude Pasayten Wilderness. Our MicroTherm™ with down quilting and overlays in all the right places for wear. Unique narrow down quilting in horizontal and vertical orientation, and sophisticated patterning, keep midweight warmth close to the body, while stretch panels allow for freedom of movement. Women's specific design and fit.