The baking mat is made of fiberglass and FDA approved silicone materials, giving your sheet pan a non-stick surface for delicate or messy baking projects. These Mats can be used about 2000 times in an oven up to 250 degrees Celsius (482 degrees Fahrenheit). These silicone baking mats can be used in the microwave and can also be used to store items in the freezer. Your logo can be available. If you need other size, please contact me.