Emergency sleeping bag is durable, waterproof and windproof, which is very suitable for emergency situations that require warmth or all-weather protection.The thermal bivy sack can be used as a camping bag, emergency shelter, rain poncho, emergency signal, etc. It is suitable for emergency situations and is a necessary tent camping equipment for outdoor camping and hiking. It can also keep homeless people warm.To use an emergency bivy sack, just pull the bag out of the bag, unfold it, and then climb in. In addition, the bright orange color of the waterproof survival sleeping bag is a good signal color, helping rescuers to easily identify you.This warm survival bivy sack is small and light, easy to carry and store, you can easily fold it and put it in a waterproof small bag.