Roll perfect, consistent-size dough rounds for pies, pizza & more! No mess! The zipper bag keeps dough and countertops clean. Flip over to roll the other side and easily transfer from bag to pan. Roll the dough and store it in the refrigerator. FDA nonstick, silicone releases dough easily. Clear silicone you can see through with easy-to-read measure marks in inches and centimeters. Easy to clean. Dishwasher safe. It measures 13.75 inches in diameter overall. Includes measure marks from 5″/13cm up to 12″/30.5cm.12″/30.5cm is the perfect size for 9″/23cm pie pan.