Made from 0.10" thick LDPE (Low Density Polyethylene), a dense flexible plastic. The slip resistance translucent material is resilient, durable, resists warping, and withstands repetitive use of a rotary cutter. This mat is marked with a 1" grid, 1/4" hash marks, 45 degree angles, as well as an inch ruler on all sides. Use pins or tacks to lightly tack material to the mat.