A bivy sack is a piece of sleeping equipment that usually includes waterproof material. “The cause of death is asphyxia due to smothering,” the autopsy report says. “The manner of death is ...

【Bivy Sack Emergency Blanket Sleeping Bag】-Compact and lightweight aluminized sided sleeping bag, can be served as thermal blankets, survival shelter, emergency bivy sac, field tested by Ex ...