it's well-made, high quality products. They have nicely rolled edges, sturdy and do not bend under normal pressure. They sit flat in the pan. perfectfor making Muffins, Crumpets, Burger Press, Frying Eggs and Much more They can be cleaned in dishwasher. The safety dagree is up to 475 when put into freezer and oven . apply some oiled when using and it 't stick to your Muffins.