The mylar blankets are actually thin aluminum sheets you can buy at any sporting goods store (like "Dick's") in the camping section. The cheap ones will rip easily and be virtually useless in many scenarios. There are thicker versions that are regular blankets. Remember, these are items you are purchasing to help you survive, so shop accordingly. 5. Grabber all-weather blanket is more comfortable than mylar and comes with better heat retention than wool. ER™ Emergency Thermal Mylar Blankets are ideal for all emergencies. They are emergency blankets used for people stranded in the cold; they reflect back body heat. The blanket comes with 4 layers that are designed to reflect and protect body heat from escaping. So over time, you could pass out due to the increased CO2 air mixture build-up trapped in the mylar blanket. But who’s to say we won’t? When it comes to Mylar space blankets… The Bigger, the Better. The drier the inside of your Mylar blanket stays, the better off you will be. If we ever need ’em, we have ’em. I have a mylar sheet beneath straw in my cat's cedar house. They can be used to prevent and counter hypothermia by reducing heat loss from a person's body, to cover injured victims in order to help reduce shock, to line the inside of a sleeping bag, and can even be used in a hot environment to provide shade as a shelter barrier. You’ll also be traping in your exhaled breath or CO2. This multi layered survival weather mylar blanket is an excellent buy for outdoor enthusiasts. Learn More EXPLORE OUR HEATSHEETS PRODUCTS. SINCE 1980 Heatsheets Classic Finish Line blankets feature our proprietary Silver Lining technology, which is based on products developed by NASA for the U.S. space program. Why do you need Thermal Mylar Blankets? The blankets were first developed by NASA in 1964 to protect equipment and personnel from extreme temperatures in space. All Heatsheets products feature our proprietary Silver Lining technology, which was originally developed by NASA for the U.S. space program. Editor's Note: While many people are tempted by the one dollar price tag at the local discount store, don't skimp when purchasing Mylar blankets. more Mylar Blanket 84 x 52(Earthquake.Car,Home) US Item Condition: 100% Brand new Packaging: 100% Plain packaging Shipping: 100% Non-branded delivery, Tracking: Yes, Why Buy From Pink Line? They are used on the exterior surfaces of spacecraft for thermal control, as well as by people. Emergency Mylar Blanket. Mylar blankets have become a symbol of the crisis on the US-Mexico border. A space blanket (also known as a Mylar blanket, emergency blanket, first aid blanket, safety blanket, thermal blanket, weather blanket, heat sheet, or shock blanket) is an especially low-weight, low-bulk blanket made of heat-reflective, thin, plastic sheeting.