UA Storm technology repels water without sacrificing breathability. Durable fabric on the body combined with soft, elastic knitwear on the hem and cuffs ensures mobility and comfort. Strategic 80g synthetic insulation on the front of the body for light warmth without excess volume. Breathable underarm mesh panels for better ventilation where you need it. Secure zippered pockets on the hand with an inner media pocket. Reflective details for better visibility when running in low light.