ALVIN GBM Self-Healing Cutting Mat 8.5 x 12 inch | Double-Sided Green/Black | 5-Layer Gridded Surface for Arts, Crafts and Sewing - Model GBM0812
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.