Sitka’s Big Game Kelvin Active Jacket harnesses the body heat while combating sweat. Ideal for backcountry hunts, the Big Game Kelvin Active Jacket features a face fabric exterior that’s been treated with a Durable Water Repellent (DWR) finish. This ensures excellent resistance to rain and snow, and a quiet construction allows you to move silently to avoid spooking potential game. The interior features a polyester mesh lining as well as 80 grams of Polartec Alpha Insulation, allowing the Big Game Kelvin Active Jacket to be worn as an outer layer when its mild or as a mid-layer when the temperature plummets. The Big Game Kelvin Active Jacket also features increased air exchange, allowing it to dry out quickly, and Polygine helps keep odor-causing microbes to a minimum. In addition, the Big Game Kelvin Active Jacket can be stuffed into its own sleeve when not in use for maximum packability.