The CutterPillar Round PVC Replacement Mat is the thickest mat you can buy at 3/16". It's super durable and double-sided, so you get the most use out of it. Even with its self-healing qualities, there are minimal effects on the mat's translucency. You can use this mat while quilting, crafting, scrapbooking, and more. The Replacement PVC Mat measures approximately 14" and features ruler measurement marks with fractions printed next to them, standard quilting angles, vertical and horizontal rulers, and common squares. Replaceable cutting mats make the Swivel a reliable and valuable tool for years to come.