Continuous baffles are fabric tubes filled with down insulation that usually run horizontally around a sleeping bag. They let you shake the down inside them to move it where you want it, usually to the top of a sleeping bag, or down the sides. Found in high-end quilts and sleeping bags like those from Feathered Friends or Western Mountaineering, continuous baffles are a highly desirable feature for some people that lets you move the insulation to the parts of you that are cold. For others, it’s a curse, because the down insulation can shift where you don’t want it to go, creating cold spots.