Material: Aluminum 

The 12-cavity aluminum muffin bakeware tray is a must-have for any serious baker, Made from durable and high-quality aluminum, this tray is designed to withstand the rigors of frequent use and provide even heat distribution for perfectly baked treats,  Perfect for baking a dozen muffins, cupcakes, or bread rolls at once, Long-lasting and resistant to corrosion, Smooth, non-stick surface makes cleaning a breeze, Wash with soap and warm water before first use.