These rigid mats are essential for anyone involved in cutting copy and paste-up. As the knife (X-acto or utility) passes through the work the surface of the cutting mat underneath closes behind the knife, leaving a smooth surface which cannot deflect the blade in the direction of a previous cut. The no-slip, no-glare surface is printed with a one-inch grid to aid in accurate cutting. Low resistance surface also helps speed cutting. 9" x 12" size; black on one side, green on the other.