PE emergency life tent insulating mylar bags provide compact emergency protection in all weather conditions by reflecting back and retaining 90% of a survival victim’s body heat..If there¡¯s nowhere to tie the paracord, the 8×5 foot mylar tube tent can also be used as an emergency sleeping bag, emergency bivy sack, pup tent, space blanket, or thermal bivvy,emergency life tent easily accommodates two adults by a simple.The material ensures a tear-resistant, windproof.