BlueD:Macaron Baking Mat, Non-Stick Silicone Baking Liner, Jelly Roll Glassfiber Pan Baking Mat (23 X 15 -inches, 63 Capacity) Material: Non-stick 100% FDA approved food grade silicone mat coated glass fiber Specification: 23 X 15 -inches, fit full sheet pan, Positioning circle diameter of 30mm, Capacity 63 for Macaroons, cookie or other gourmet pastry. Can be used in temperatures ranging from -40 to + 480 degrees F. refrigerator, freezer, microwave and oven -safe Working surface for rolling or kneading dough, chocolate, sugar Silicone coating on both sides for better counter grip, easy food release No grease is necessary and just place cookie or pastry dough directly on liner; Super washable - flush or a soft cloth to clean graze silicone pad