Made of food grade silicone. Heat resistant, non-toxic, BPA free. We suggest to place on a cookie sheet before placing in oven or moving the mold. Temperature Safe from -40 to +446 degrees Fahrenheit. Oven, Dishwasher, Freezer, Micro-Wave safe. The pans are easy to use, it’s great for spending time with the family to make donut together. The silicone is flexible which makes it easy to release the donut from the mold. We suggest to use it on the steel baking sheet. Dimension: 10.2 inches x 7 inches x 1 inches Diameter of each Donut: 3 inches / 7.5 cm.