Esky Emergency Sleeping Bag, 2 Packs Waterproof Lightweight Thermal Bivy Sack, Survival Shelter Blanket Bags With Compass And Loud Survival Whistle, Portable Sack For Camping, Hiking, OutdoorLosing body heat is a major cause of death in emergency The Esky Emergency Survival Sleeping Bag can increase your chances of survival in all weather, all seas..