When the weather conditions are as changeable as the intensity of your efforts, this lightweight synthetic insulated jacket offers the perfect balance of warmth and breathability to keep you comfortable. Filled with dual-intensity PrimaLoft® Gold Active+ insulation  , which is lighter in hot spots to regulate your body temperature, this is a versatile jacket that can be used both as a technical outer layer on a dynamic summer hike, or as a warm, performance mid-layer in colder weather. Now featuring a new, even more breathable lining, the Xenair Alpine Light Jacket expertly handles changes in temperature and intensity of your efforts, without you needing to remove clothing.