Protect your table from sharp blades, writing instruments and other art tools. The cutting mat surface heals so cutting leaves no visible trace. Features 3mm thick PVC, 5-layer construction, a non-slip, non-glare surface, 1/2 inch grid with 1/8 inch marks for precise alignment as well as 45 and 60 degree guides. Double-sided with green on one side, black on the other. Both sides contain all the grids and guidelines. 12" x 18" single cutting mat