Ever Ready First Aid Mylar Rescue Blanket, Large Silver Thermal Sheet for Emergency and Survival, 54” x 84” – 20 CountMylar MATERIAL Our emergency blanket is made with Mylar material. Mylar has insulating properties and can reflect retain 90% of human body heat. It is also weatherproof and will keep you warm under any circumstances. SIZE Sized at 54 x 84, our Mylar blanket is large enough to cover all body types. Mylar is thin and easy to fold, making the blanket easy to carry or store. COMPACT & LIGHTWEIGHT The blanket is extremely light and portable after folding.