The Chef's Classic 4 piece non-stick bakeware set has a professional heavyweight steel construction for even heating and a double coat of Whitford Xylan Non-Stick on interior and exterior for easy release and cleanup. The hick rolled edges prevent warping. It is dishwasher safe. The set includes: 9 in. Loaf Pan, 9 in. Square Pan, 9 in. Round Cake Pan, and 6 Cup Muffin Pan. Limited Lifetime Warranty.