Cake Boss Countertop Accessories 23-1/2-Inch x 15-3/4-Inch Silicone Baking Prep Mat, White 23-1/2-Inch by 15-3/4-Inch Prep Mat The silicone prep mat is sturdy and flexible, with convenient inch and centimeter ruled guides along the edges The prep mat includes 6-, 8-, 9- and 10-inch diameter guides for rolling out fondant, gum paste, pastry and other dough's A dry and liquid measurement equivalents chart is imprinted on the prep mat for easy reference Dishwasher safe