The Elmer's X7761 Self-Healing Cutting Mat is a heavy-duty, three-ply cutting mat designed to minimize the effects of cutting with sharp blades. It features a special surface and core that work together for durability. The 1" grid pattern includes 90 degree, 45 degree, and 30 degree angular guides for accurate layout, with eighths clearly printed along the edge guides. This cutting mat is ideal for art, drafting, and engineering students, as well as anyone engaged in cutting projects.