Something to wear while you scan the horizon for signs of building stratocumulus. Breathable side panels suit stop-and-start activities and articulated sleeves let you shoulder a pack or swing a splitting axe. Kühl Alfpaca fabric offers core warmth. Lighter-weight side panels are breathable on the go. Articulated patterning on shoulders and sleeves. Zippered hand pocket and zippered chest pocket. Dynamic stitching on low bulk seams.