The Siser® High Tack Cutting Mat is perfect for holding heavier materials in place for cutting. The mat’s extra strong adhesive is ideal for all HTV- especially thicker materials like Brick® 600 and StripFlock® Pro. Use the cutting mat to stabilize all sorts of materials used in garment and home good decoration, as well as cut stencils and templates. Plus the built-in grid coincides with Leonardo Design Studio so you can cut with precision and accuracy easily. The 12"x12" (30x30cm) mat is Ideal for cutting standard sheet sizes. The 12"x24" (30x60cm) has double the cutting length of the 12"x12" mat. You can cut sheets up to 24" (60cm) long.