Can withstand both hot and cold foods. Made from 98.5% aluminum with the balance made up of iron and silicon, which are added to give greater strength and 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. Materials: Aluminum; Length: 1,000 ft; Width: 12in; Packing Type: Box.