Flannel is a warm, brushed cotton unlike regular cotton. It is also the perfect material to use as a sleeping bag liner in cold regions or as a sleeping bag in warm areas. Material: 100% cotton flannel. Size: 87.6 x 35.4 inches (220 x 90 cm). When stored: 5.1 x 7.5 x 0.8 inches (13 x 19 x 2 cm). Weight: 1