Ultralight highly packable puffy insulated mitts from Black Diamond. Perfect for those non-technical summits, winter hikes, ski tours, around camp, or as an emergency pair of mitts thrown in your pack just in case you need them.  Great for warming your frozen hands back up when you finally make it back to the car after an epic outing.  These also make a nice second pair of cold weather liners for many mittens with removable liners when sized appropriately.