Silicone Coated Fiberglass Non Stick Baking Mat, Fits US Half Size 11 3/4″ X 15 3/4″, 30cm X 40cm Baking Sheets, Trays & Pans. Better Than Silpat Nonstick Bakeware. Perfect for Cookies, Pastry, Fish or When You Need a Liner When Cooking in the Oven.