World Cuisine Non Stick 13 3/4 Inch by 13 Inch Silicone Baking Mat a pan liner made of food grade woven silicone producing a non-stick surface temperature resistant from -40 to 600 degrees F. and reusable up to 3,000 times can be placed on oven rack or cooling rack, but not on open flame suitable for cakes, cookies, and confectioner work easy soap and water clean-up