This Chicago Metallic Professional Muffin Top Pan pan is constructed of carbon steel, proving superior heat conduction. Features a shallow cup design, which creates muffin tops. Designed with a non-stick, easy release coating for ease in baking and cleaning. Dishwasher and oven safe. Muffin top pan measures 15-3/4 inch long x 11 inch wide x 1/2 inch high; each muffin cup measures 3-1/2 Inch diameter.