These foil wraps are uniquely designed with a triple thermal barrier of foil, paper and air that help maintain heat in hot foods and keep cold foods cool. The barrier helps prevent leaks. Sheets can be molded to any shape you like making them excellent for wrapping hot or cold food. Moisture-proof, odor-proof and grease-proof. Material(s): Aluminum; Length: 14 in; Width: 16"; Packing Type: Pack.