These look like they aren't a real product, or at least a really useful or practical product, but they do work. I don't know if I'd wear them while clear cutting a forest or bear hunting, but if you're on a beach when a cold breeze comes up these are snug, comfy, and warm. Folded and in their pouch they can keep in any small pocket on your windbreaker or jacket and then be popped out as needed.