A revolutionary integrated steel structure gives the Trudeau Structure Silicone 12-Cup Muffin Pan the best of two worlds Non-stick convenience plus sturdy, secure handling. It bakes evenly in the oven or microwave and is dishwasher safe. Makes 12 evenly baked muffins, cupcakes and other treats. Silicone surfaces are non-stick to release baked goods easily and clean up quickly. Integrated steel core provides strength and rigidity for secure handling. Oven safe to 430F. Microwave and dishwasher safe. Measures 14.37" L x 10" W x 1.34" H. Lifetime manufacturer's warranty.