This the the all in one cutting mat. There is no need to purchase the thick or thin mats anymore. This does it all! Single replacement cutting mat for the Silhouette and Silhouette SD Digital Craft Cutter. This mat has an adhesive surface to hold your material in place during the Silhouette's cutting process. Replace the protective lining over the adhesive area when not in use. Also, be sure to use the correct blade adjustment cap to prevent damage to your cutting mat and the black cutting strip on your tool. See your user's manual for more information about blade adjustment caps and general cutting tips.