The Adventure Medical Kits SOL Survival Blanket is the most advanced emergency blanket on the market - meticulously designed never to fail when you're counting on it with your life. It all starts with the material - vacuum-metalized polyethylene reflects 90% of your body heat while also offering a number of other important features that set the Adventure Medical Kits SOL Survival Blanket apart from traditional mylar blankets: it opens easily and will not shred if nicked or punctured, rips and tears can be repaired, it is quiet and won't crinkle in high winds, and its high-visibility orange exterior makes it easy for rescuers to find you.