Havel’s-double sided rotary cutting mat.This mat has multi-angled grid lines that offer a variety of creative options for a perfect cut every time! the mat is double-sided with 22×16 inches on one side and 570×420 millimeters on the other.It is five layers thick to protect your rotary blades as well as your work area.This package contains one 18×23.5 inch double-sided rotary cutting mat with measurements in inches on one side and measurements of millimeters on the other.Imported.