Truth: We felt ridiculous when we first put this wearable sleeping bag liner on. But we forgot about style once we realized how warm the Unightie kept us under a synthetic blanket on a 30°F night in Arizona’s Sunset Crater Volcano National Monument. A foot pocket at the bottom kept it from twisting and riding up while we slept, and a hood prevented us from searching for our beanie in the middle of the night. The Unightie is about the same weight as a liner, but unlike a liner, it has more than one use: You can also pack it (or other clothes) into the included stuff sack to make a pillow, or wear it on its own around camp. Outside our tent the next morning in Sunset Crater, unobtrusive magnets on either side helped us hitch up the hem and still cover our bum while we changed.