The CutterPillar Swivel replacement PVC mat is the thickest mat you can buy. Durable too. Cut on both sides... to your hearts content. ​ The self-healing qualities allow the cuts to have little effect on translucency. ​ Easily removable, use with or without the rotating base. ​ The grid lines and rulers are quite user-friendly and useful. ​ Replaceable cutting mats make the Swivel a reliable and useful for years to come.