SAVE YOUR LIFE: Designed for emergency and survival situations where warmth or weather protection is needed. The bivy bag can help you prevent hypothermia and the attached whistle lets you call for help so others can quickly confirm your location and get quick help, even saving your life. < p>DURABLE AND KEEP WARM: The Survival Bag is made of extra thick mylar material with a tear and puncture resistant coating to stave off harsh weather and conditions. The emergency bivy bag is strong enough to be reused. It can withstand howling winds, driving rain and heavy snow to keep you warm, making it an essential survival shelter, emergency bivy bag. OUTDOOR ESSENTIALS: Easy to use outdoors, just take out of the stuff sack, unroll and climb indoors to maintain your body temperature. Small and lightweight emergency shelter lets you carry it anywhere, making it essential survival gear. VERSATILE EMERGENCY SLEEPING BAG: Our emergency sleeping bag can be used as a survival shelter, emergency blanket, rain poncho and all-in-one emergency bivy bag. These survival whistles can make a loud sound and play an important role in various emergency situations. LIGHT WEIGHT AND COMPACT: The package includes 2 emergency sleeping bags with survival whistle. Each survival sleeping bag measures 78.7 x 47.2 inches (200 x 120 cm), enough to accommodate any adult body. Foldable size 11 x 7 x 7 cm and a weight of 118 grams. This bivy sack is small enough to fit in the palm of your hand. It is easy to carry and store anytime and anywhere, saving space.