Can withstand both hot & cold foods. Made from 98.5% aluminum with the balance made up of iron & silicon, which are added to give greater strength & puncture resistance. And you can feel good about using it because Reynolds aluminum rolls are made with 100% recyclable aluminum. Check to see if recycling facilities exist in your local area. Material(s): Aluminum; Length: 500 ft; Width: 18"; Packing Type: Box.