This 12 x 18 inch mat is a double-sided. One side has a soft foam and slightly flocked surface - perfect for piercing, using brush side of the Tool 'n One, sold separately, and stamping. The other side is a self-healing surface - perfect for cutting and general crafting. Also on this surface, there is a one inch magnetic strip is along the top edge to hold items such as our die templates. Both sides have measurement grids.