This Zyliss Durable Non Stick Removable Base Cake Pan is made from heavy-gauge carbon steel, designed to distribute heat evenly for consistent baking results. Perfect for sponges, the removable base sits securely in the frame to prevent leaking and the straight wall frame leaves no indentations on your bake. The double layer of non-stick coating Quantum II ensures easy release every time. Designed to withstand up to 240°C/475°F/Gas 9, the rolled edges provide added strength and resistance to warping. Made from heavy-duty carbon steel with a double layer of non-stick coating, the Zyliss bakeware range gives consistently great results for both novice and professional bakers – even baking, no warping, and no sticking, time after time. Dishwasher safe.