The 8 x 12", standard tack Portrait Cutting Mat from Silhouette is compatible with the Silhouette Portrait, Portrait 2, and Portrait 3 cutting machines and the Silhouette Cameo, Cameo 2, Cameo 3, and Cameo 4. It's designed to hold materials in place when sending jobs to the machine. The mat has a regular adhesive level to hold most cardstock and general material types in place. It has a printed grid which coincides with a virtual on-screen mat in the Silhouette Studio software for greater ease of use.