6" x 8" green self-healing professional quality rotary mat especially designed for use with OLFA and other brands of rotary cutters. Convenient size for taking along to classes and retreats. Also great for use next to your sewing machine for quick trimming of blocks or when foundation paper piecing. Double-sided with yellow guidelines on one side, solid on opposite for general cutting. Rotary mats protect your work area and greatly extend the life of your rotary blades. 1.5mm thick for a variety of applications.