It's getting to be Down Bootie season out east, and though I find myself wearing these around the apartment more than I do at a campsite, they really are good for both. Weighing next to nada, there are several brands that make these ugly things. Clockwise from top left: Sierra Designs, Western Mountaineering (that's what I've got), REI, and Feathered Friends.Anyone have an opinion about these thangs? Other than the fact that they'd sell better/be more acceptable if they weren't called "booties?"