Thrive The Wild Emergency Survival Mylar Sleeping Bags - Stay Warm, Stay Prepared In emergency situations, losing body heat can be life-threatening. That's why Thrive The Wild designed these ultra-durable Emergency Survival Mylar Sleeping Bags to help you retain 90% of your body heat in extreme conditions. Measuring a spacious 36" x 84", with an additional 21" head cover, this survival bag ensures you stay warm and protected, even in freezing environments. Not just for the cold—these bags also reflect intense sun, stabilizing your body temperature in scorching conditions when used as a shelter. Our sleeping bags are lightweight, compact, and can easily fit in your backpack, glove box, or even your pocket—perfect for camping, hiking, and outdoor adventures. The durable Mylar material, originally designed by NASA, is built to withstand the harshest weather conditions, ensuring long-lasting protection. Portable & Versatile Design Each set includes two sleeping bags packed into individual carry bags with paracord drawstrings that double as emergency tools. The drawstring can be used to start a fire or repair gear in survival situations. Additionally, the 120-decibel survival whistle attached to the drawstring is loud enough to signal rescuers up to a mile away. Whether you're preparing for an unexpected emergency or planning your next adventure, these compact and affordable Thrive The Wild Sleeping Bags are essential for your survival kit. Store them in your home, car, or gear bag so you're always ready for any situation.