... silicone rubber approved by FDA and LFGB2.Flexible:easy to remove baked foods,and can be folded for saving ... microwave ,conventional oven or freezer,from -40 to 500 °F6.Easy to clean:just rinse and wipe ,non-stick ... welcome .If you have your own design ,pls send to me ,If you don't have your own design ... worry , we will help you to do the design , you only need to provide us your size and thickness ...