Decent light blanket.
"The material of these blankets are light weight and breathable. I'm not sure how good they would be outdoors in cold weather, but they're perfect for sitting on the couch. They're big enough for a single user, and I've bought several as convenient spares. They turned out perfect for making Ruana cloaks for the Renaissance Festival. (It's like a poncho with a slit down the front. ) They are light enough you don't overheat, but rugged in both material and appearance. They look fabulous!"