Ironstripe Bivy Sack Emergency Sleeping Bag - Extra Large 94'' x 48'' Built-in Hood, Survival Sleeping Bag with Emergency Whistle, Thermal Mylar - Tear & Puncture-Resistant Emergency Bivy Bagbivvy sack waterproof, camping bivy sacks, space blanket sleeping bag, emergency outdoor camping thermal sleeping bag, hunting bivy, mylar survival, survival s..