The Ready-Heat™ Disposable Medical/Emergency Heated Blanket has been manufactured using synthetic non-woven fibers. This potentially life saving blanket comes individually sealed in an oxygen free protective poly-bag. When the Poly-bag is opened, the contents of the sealed in heating elements react with the oxygen in the atmosphere and generate heat up to 100°F in 10 minutes and lasts for up to 8 hours. The heat that will be generated will provide sufficient warmth and comfort to the user for several hours. All Ready-Heat™ blankets are water repellent and provide UV protection Aids in the prevention of Hypothermia in trauma patients Ready-Heat™ offers a convenient, ready to use blanket that remains warm to 104° Fahrenheit (40° C) for approximately 6-8 hours Used to warm extremities in pre-hypothermic victims Adjustable with hook and loop attachments Dimensions: 40.6 x 45.7cmNATO Stock No: 6532-01-538-1525