1. LIGHTWEIGHT AND COMPACT: This survival sleeping bag is small enough to fit in the palm of your hand,easy to carry and store at anytime and anywhere.Our life bivvy sack are a must-have for outdoor,camping, trail running, marathons, bug out bag, car survival kit, earthquake survival kits,survival gear,hiking bag and travel first aid kit. 2. RAIN, WIND AND SNOW PROECTION: Emergency bivy sack does better in waterproof, windproof, and keeps you dry and warm in damp and downright cold environments. It will withstand howling winds and pouring rain without getting ripped like many flimsy emergency heat blankets do. 3. SAVE YOUR LIFE: Made of durable insulating Mylar material,perfect for emergency situations where warmth or protection from all-weather conditions is required. sleeping bag Use in low temperature environments to prevent 90% of its heat from escaping.Can be used as a picnic mat. 4. MULTIFUNCTIONAL EMERGENCY SLEEPING BAG : Serving as an emergency blanket, survival shelter, raincoat, sunshade, ground cover, water collector and many more. So, whether you are trapped in your car during a heavy storm or you need to remain outdoorduring the night, our survival sleeping bag kit will keep you warm and alive in any emergency situation.