X-ACTO Self Healing Mats are a unique accessory that is a must-have for hobbyists and designers who frequently use X-ACTO knives and cutting tools. These cutting mats feature a special surface material which allows them to absorb cuts from a sharp knife or cutting tool and then magically retain their original surface. You won´t even be able to find the cut! Self healing cutting mats preserve the surfaces around your workspace! This self healing cutting mats also feature a one inch grid pattern for accurate cutting, slicing and trimming. Mat measures 12" x 18".