NEW! * Keep Warm and Stay Alive in Emergencies: Emergency shelter bivy to reflect back 90% of your body heat and act as a waterproof sleeping bag. With a whistle attached, bright signaling colors, it is made to keep you safe in sticky situations. * Compact and Lightweight: Ultra-lightweight survival shelter bivy lets you keep on moving, weighing only 4.4 oz. Compact and easy to store, it fits perfectly in even the most streamlined hiking pack, or car survival kit. * Unlike cheaper Mylar materials, bivy is made of tear-resistant poly. * Waterproof and windproof, a perfect combination for anyone who loves to spend time outdoors. Tear-resistant and designed for reusability.