Metal Structure Silicone Muffin Pan: The hidden stainless steel frame around the outer edge makes the muffin pan more stable and resistant to deformation. No more spills after the batter is filled when transferring the bakeware from the counter to the oven. Flexible & Non-stick: Compared to metal pans, this reinforced silicone muffin pan is a breeze to release and resistant to rust. Polished surface and flexible silicone allow muffins to pop out with a push of your finger from the bottom. It is easy to clean thoroughly. 12-Cup Regular Size Muffin Pan: Cup depth: 3.45 cm. Regular sizes of muffin pans apply to most muffin liners. The rigid metal frame makes the silicone muffin pan easy to handle. Easy to get in or out of the oven. High Resistance: Food-grade silicone. Safe for oven, microwave, dishwasher, refrigerator, freezer. High heat resistance range: -104℉ to 446℉ (-40℃ to 230℃), suitable for a variety of baked goods. Multifunctional: These non-stick muffin pans are excellent for baking egg muffins, Frittatas, Cornbread Muffins, Cakes, Tarts, Bread, Cheesecakes, Mousse, Jelly, Conditioning Food, Muffins, Custards, Soap, Fat Bombs, Mini Pumpkin Pies