The Self-Healing Cutting Mat by American Crafts is a durable 18 x 12-inch silicone mat that protects your work surface when you are working with crafting cutting tools or the Photo Sleeve Fuse (sold separately). This spacious 18 x 12-inch mat is perfect for making custom photo sleeves, scrapbook page layouts and much more! This durable two-sided mat allows you to cut, embellish and customize any crafting project without the worry of damaging your work surface. Mat is marked with a convenient measurement guide in both inches and centimeters, allowing for accurate cuts and precise placement every time.