Newcomdigi Bake Buddy Middle Silicone Pastry Mats 23" X 15 " Non-Stick With Measurements and Conversion Charts White HIGH-GRADE QUALITY : The silicone pastry mat is made of food-grade silicone and sturdy glass fiber. REASINABLE TEMPERATURE RANGE : The applicable temperature range of the silicone pastry mat is -20 C --250 C . It's not only can be used in stove, but also can be used in microwave and refrigerator. NON-STICK FUNCTION:No extra flour or oil needed to keep the pastry items from sticking to the surface . EASY TO CLEAN AND FOLDING : Silicone of highest-grade FDA certified , so it is easy to clean and fold ; Give you a perfect large baker's sheet. WIDELY USAGE :The silicone pastry mat can be used to cook varies kinds of baked food.