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. Material(s): Aluminum Foil; Length: 500 ft; Width: 18"; Product Packaging: Roll.