The Add-A-Mat 12″ x 18″ Self-Healing Cutting Mat, from Sullivans, features a double-sided cutting surface, extra-large numbers, and a non-glare finish for better visibility. The mat measures 12″ x 18″ with a 10″ x 16″ simple grid layout. Try extending your cutting area by combining mats with the Add-A-Mat Cross Mat Joints! The Add-A-Mat 12″ x 18″ Self-Healing Cutting Mat is perfect for sewing, quilting, and crafting while protecting your work surface from damage.