Ideal for baking cookies and pastries. It has a rectangular shape and fits half size sheet pans. It is made of woven fiberglass and coated with food grade silicone. Turn your baking pan into a non-stick surface using the Winco SBS-16 Silicone Square Baking Mat. Perfect for baking cake, cookies, and other culinary confections, this baking mat provides even heat distribution ensuring a perfectly baked and browned result. Made from exceptionally strong woven fiberglass with food-grade silicone coating, this mat withstands a wide range of temperatures while maintaining its shape. A versatile kitchen tool, this baking mat can also be used as a work area for rolled fondant or for freezing chocolate-covered pretzels. Baking mat. Silicone construction. Fits half size. Use 1000 times on each side. 600 degrees F rated. Makes baking surface non-stick and provides even heat distribution. 11.6" L X 1.6" W X 1.6" H.