Miraj Non-Stick Silicone Baking Mat Set, 2 Pack (Size 16-1/2" X 11-5/8"), Professional Quality, Non Toxic & FDA Approved It fits perfectly in half size baking sheets 18" x 13". Can be used in the oven, microwave, toaster oven and freezer. It is made of 100% approved food grade silicone material that compliance with FDA and LFGB regulations.It is BPA and BPP free It has a property of heat resistant, non-stick, non-grease,and reusable characteristics. There is no need of using cooking spray, oil, butter or parchment paper thereby you can save lots of money. It can be easily cleaned by washing with soap and water & air dried. It is also dishwasher safe for top rack only. It withstands temperatures from -40 Fahrenheit to 480 Fahrenheit.