Einfach 2PCS Silicone Baking Mat-Nonstick-Heat Resistant-Healthy Cooking-Food Safe Certified-Oven Tray Liners and Cookie Sheets-Reusable Great natural, eco-friendly baking tool, made of fiberglass and silicone which can be used thousands of times No need for oil, cooking sprays, or parchment paper, a healthy way to bake your favorite food Turn your pan into a non-stick surface and save time cleaning up Freezer, microwave, and oven-safe, can withstand the temperature from -40C to up to 250C Mat measures 42cm (16.5") long * 29.5cm (11.6"), Made for a 13" x 18" pan