Product Title:2 PACK Emergency Sleeping Bags Survival Sack with Whistles Lightweight Portable Survival Gear for Outdoor Camping Hiking Ns2. Specification: Product: Emergency Sleeping Bag Material: extra-thick mylar Color: camo Expand Size: 3.9 ft X 6.6 ft Package Size: 2.7 in X 2.7 in X 4.1 in Description: 1. 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. 2. Each survival sleeping bag measures 3.9*6.6 feet it is enough to wrap an adult's body. 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. 3. 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. Packaging Includes: 1/2* Emergency Sleeping Bag Set Due to different measurement methods, please allow a measurement error of 2-3cm. Due to the problem of shooting tools and light, please allow the color difference between the picture and the product.