Emergency survival sleeping bag provides waterproof and windproof protection while giving warmth. This mylar survival sleeping bag retains 90% of body heat and protect individuals much more than the typical mylar space blankets. No openings on the bottom and sides of the emergency sleeping bag means less heat loss. Wrap securely inside the ''mummy'' style sleeping bag will conserve body heat. Total dimension of the emergency sleeping bag are 84'' x 36'' unfolded. Folded dimensions 6'' x 1.75'' sold each.