PME Carbon Steel Non-Stick Bakeware is manufactured to top quality standards. Robust construction that provides stability and even spread of the Heat. Durable non-stick Whitford coating on interior and exterior that ensures easy release. The product is covered by a limited 5 year warranty. Knightsbridge PME warrants that PME Carbon Steel Bakeware will be free of faults in manufacture and material used for 5 years.