Withstand the cold and the elements with this 5 x 8', two-person Survive Outdoors Longer Survival Blanket from Adventure Medical Kits. Made of Heatsheets vacuum-metalized polyethylene, it reflects 90% of your body heat and is resistant to punctures, rips, tears, shredding, and wind--in addition to being waterproof. Survival tips and techniques are printed directly on the blanket, so you have them when you need them.