FISKARS-Self-Healing Cutting Mat. This double-sided cutting mat gives you twice the cutting life! Both sides have 1-inch grid lines with dotted lines at 1/4 inch increments. All four edges have rulers with 1/8 inch increments and there are also 30- 45- and 60-degree angle lines The cutting grid area measures 12x18 inches and the overall size of the mat is 13x19 inches. This package contains one self-healing cutting mat. Made of 100% polypropylene.