Fits 18 x 13 baking sheets;Safe - Constructed of FDA and LFGB-approved materials. BPA and BPP free.;Versatile - Can be used in the oven, microwave, toaster oven and freezer. Turns any baking sheet into a non-stick surface;Saves Money - No need for parchment or wax paper. Silicone is durable and long lasting;Healthier option - No need for cooking sprays or oils;Saves time - Easy clean up - wash with soap and water and let air dry. Also dishwasher safe for top rack only;Withstands temperatures from -40 degree to 480 degree F (-40 degree to 249 degree C)