Self Healing Rotating Cutting Mat 18x18 (17" Grid) Perfect for Quilting Art Projects Calibre Art bring this unique self healing rotary cutting mat for people who enjoy quilting and other small art and craft projects. The mat provides the perfect surface for you to cut papers, fabrics and leather strips. Not only does it protect your tabletop, it also protects your blades because of the soft compound of the mat that does not dull blades like cardboard does. The mat?s surface is made with high quality material that is European Commission EN 71-3 compliant. The surface is free of heavy metals and does not emit gas. The self healing property of the compound helps with resealing of surface cuts and allows the mat to retain its smoothness so that the cuts do not interfere with subsequent cutting. The rotating feature of this self healing mat allows you to rotate the mat (and the material) instead of changing your body posture while cutting. This makes cutting easier, better and safer because you retain optimum wrist and arm angles for your cutting hand. Along with the highly accurate grid lines, there are also many angle lines (every 15 degrees) to assist you when you need to cut special shapes. The grid line color and mat base color are chosen such that they are very easy for the eyes to read, providing enough contrast but not hurting the eyes. The surface texture is designed to not cause glare. There are 3 size options available for this mat: 18" x 18" (17" grids), 14" x 14" (13" grids) and 8" x 8" (7" grids). Smooth Rotation Guaranteed - This cutting mat features an expertly designed rotating mechanism that makes rotation very smooth with a non-detachable base and the cutting surface spins with ease. Self-healing Material for Long Lasting Surface - The self-healing nature of the mats surface compound enables resealing of surface cuts and a long-lasting smooth surface. EN 71-3 Compliant Surface Compound - The mat uses EN 71-3 compliant compound for the surface, which is the most stringent chemical standard for regulating the quality of mat's surface. Highly Accurate Grid Lines - The grid lines printed are very accurate ensuring precise straight line cuts and quality work every time. Non-slip Base - The mat has a non slip bottom base to ensure that the mat stays in place and does not slide around when cutting.