A triple-layer heat welding process is used to create these rotary mats to increase mat life. This cutting mat is also self-healing, resealing surface cuts for a perpetually smooth surface. The 1.5mm-thick double-sided OLFA rotary mat offers different cutting options. The solid side can be used for general cutting, while the grid-lined side can be used for precision cuts. The 6-inch by 8-inch size is perfect for cutting tiny pieces and allows for easy transport.