Freezer microwave and oven safe. <br />non-stick qualities through more uses <br />Withstand temperatures from -40 Degree up to 500 Degree Fahrenheit. <br />Material: 100% Walfos food grade silicone<br />Size: 11.81 x 6.89 x 0.79 inch， <br />Cavity: 2.56x0.79inch;