Chicago Metallic CMB038 Marshmallow Silicone Baking Mat with Cutting Gridlines, 9x13-Inch Silicone baking mat fits 9" by 13" baking pan; gridlines for easy cutting of 24 to 88 pieces Mat extends up the sides and over the edge of baking pan To use: center mat in bottom of pan, lift to remove Use only plastic cutting utensils Hand washing recommended; oven safe to 350Degree F