Features 8.5 x 12 in size Features a one-inch grid pattern for accurate cutting and trimming These cutting mats feature a surface material that absorbs cuts from a sharp Excel Blades knife. The cutting mat reserves the surfaces around your work space and protects it from sharp tools creating damage to the area. Phthalate free Made from PVC Overview Protect your work surfaces with these three-ply self-healing cutting mats. The self-healing feature means that cuts will close up and virtually disappear and the multiple ply aids in preventing warping. Each mat is calibrated in one inch grid patterns to assist in accurate layouts.