The Men's Mountain Hardwear Ghost Whisperer Jacket is an ultralight insulation piece for climbing, hiking, and anytime cold-weather adventure. Whether you're expecting the cold or the forecast is wavering, the jacket packs down small into its own pocket and weighs in around 8 ounces, so there is no reason not to bring it. The 800 fill power down wraps your upper body, wearable as a midlayer or standalone, trapping heat to keep you warm against the cold days of exploration.