Emergency Survival Bivvy Bag — Lightweight Mylar Sleeping Bag, Reflects 90% Body Heat, Waterproof

Weighing just 3.8 oz and folding to the size of a deck of cards, the emergency bivvy is the highest life-safety-per-ounce item you can carry. Unlike flat mylar blankets that blow off in wind, the bivvy completely encloses your body — reflecting 90% of your body heat back to prevent hypothermia in any survival situation.

• Reflects 90% of Body Heat — clinically proven to prevent hypothermia
• Full-Body Envelope Design — completely encloses you unlike open blankets
• Waterproof & Windproof — HeatShield® aluminized polyethylene blocks wind chill
• Reusable — folds back to original size after use
• High-Visibility Orange Interior — visible to search and rescue from the air
• Fits: Up to 7' tall | Weight: 3.8 oz
• SOS printed on exterior for signaling

FAQ

How does it compare to a space blanket? The bivvy completely encloses you — wind can't steal heat like it does from a flat blanket. Far more effective in real survival situations.

Good for emergency car kit? Yes — every vehicle kit should have at least 2 bivvies. They pack flat under a seat.