The army poncho can be very compact if folded and rolled properly. The one I carried for many years and finally had to ditch one night had a Thinsulate liner modified with zippers to form a sleeping bag, and a neck cord. it had a zipper in the head hole so it could still be worn as a poncho. Later I came across a fiber re-enforced space blanket, lightly sprayed the inside of the poncho with a light adhesive and added the blanket, carefully smoothing out wrinkles and cutting a head opening. Very warm for the size and wieght. Hope this helps.