Uchida BS Marvy Opaque Cutting Mat, Black, 12-Inch by 18-inch This cutting mat is static free and it's double layered self-healed cutting surface is made of rubber and remains smooth after many cuts The surface has an 1-inch square grid pattern to aid in cutting which gives graphic guide It is good for most cutting work This mat can be used in your computer work area and as a writing and stamp mat Available in black color; measures 1/5-inch length by 12-inch width by 18-inch height