Summer mountaineering requires versatile insulation that performs in unpredictable weather without slowing you down—and the lightweight Alpha 60 Jacket with 4-way stretch delivers. Engineered to be incredibly air permeable, Pertex® Quantum Air fabric strikes the sought-after balance of wind resistance and breathability, while Angel-Wing Movement™ offers flexibility so you can regulate your body heat and stay comfortable. An adjustable hood and durable water-repellent (DWR) finish add extra protection against light rain and snow, and Polartec® Alpha® insulation keeps you warm whether you're on the move or stopped at the summit taking in the view. Zippered handwarmer pockets and a zippered chest pocket provide key storage.