You get a smooth surface even after multiple uses. The cutting mat possesses unique self healing properties allowing the cutting mat to RESEAL itself after EVERY CUT. LASTS 10 TIMES AS LONG compared to ORDINARY MATS. The ONLY self healing cutting mat you'll need for a VERY LONG TIME. Built to be STRONG and DURABLE. It is THICK and DOUBLE SIDED to protect your tables or work areas. EASY and ACCURATE CUTTING. The self healing mat contains different sets of clear grid lines, precision measurement and angles that will greatly help the cutting process. Our cutting mat material is the high quality PVC, it doesn't contain any toxic chemicals, eco-friendly and durable and ROHS test! •45cm x 30cm x 4mm •DOUBLE SIDED PRINT BOTH METRIC AND IMPERIAL •ANGLE GRID PATTERN •5 PLY SPECIAL PVC •HEAVY DUTY MAT RESISTS CURLING AND WARPING