Wilton Perfect Results Premium Non-Stick Bakeware Cookie Sheet, 15 x 10-Inch Medium size cookie pan for everyday cooking and baking Made of steel; on-stick surface for easy release and quick cleanup 15.25 x 10.25 x 0.75 in. (38.7 x 26 x 1.9 cm) Limited 10-year warranty Dishwasher safe; however for best results, wash in warm, soapy water before first and after each use