Named after the Japanese phonetic for “breathing”, our Kokyu Full Zip Hoodie is the ultimate insulation piece for heart-racing mountain adventures. Two fabric technologies give you versatile protection as you ascend: Polartec® Alpha® regulates core body temperature when active and stationary, eliminating the need to shed or add layers throughout the expedition; Polartec® Power Grid™ uses a unique grid structure that increases warmth and compressibility without adding bulk, ensuring you can move fast and light.