ALVIN GBM Self-Healing Cutting Mat 12 x 18 inch | Double-Sided Green/Black | 5-Layer Gridded Surface for Arts, Crafts and Sewing - Model GBM1218
Ideal for your next project and protecting your furniture. Its grid design will make sure that your cut is accurate and precise. And it is self-healing, so you won't need to worry about dulling your knife blades quickly. And with its reversible colors of black and green you can decide which color works best with the type of paper you have.