PERFECT EMERGENCY BAG : The emergency sleeping bag serves as your emergency blanket, survival shelter, and emergency bivy sack all-in-one. The special material reflects 90% of your body's heat back to you, stay warm and alive in extreme conditions. Save your life in an emergency. Survival whistle provides up to 120 decibels sound, enough to be heard at long distance. Bright orange color help you be found more easily in an emergency. It is an essential survival tool LARGE BUT LIGHTWEIGHT: Each survival sleeping bag measures 210*90CM, it is enough to wrap an adult's body. And it is small enough to fit in your palm. Easy to store it nearly anywhere, such as hiking pack, go bag, bug out supplies, and car glove box. It is a compact but a must-have for outdoor, camping, trail running, marathons, travel or any outdoor activities. DURABLE & REUSABLE: This space blanket is made of extra-thick mylar material with a tear and puncture resistant coating. So it is suitable for various harsh conditions. The survival blanket can keep warm and save your life in extreme conditions. The survival bivy bag is durable enough for repeated uses. You can fold up it and place back inside the Nylon stuff sack after you used it for the next use. RAIN, WIND AND SNOW PROECTION: It was a great feeling to be able to sleep warm when you are camping or exploring outdoors, especially when it suddenly becomes cold. survival bivy sack do better in waterproof, windproof, and moistureproof and helps to keep you dry and warm in damp, wet, rainy, and downright cold environments.