ARISHINE Windshield Snow Cover, Magnetic Edges SUV Car Snow Cover Snow Ice Frost Auto Cover, No More Scraping - Door Flaps Windproof Fit for Cars Trucks Vans and SUVs, 70"x 57" Double Sided - two perfectly calibrated and beautiful blue on white cutting mat surfaces Self-healing - the material will swallow up and erase cut marks so that previous cuts will not affect new ones Non Toxic Non slip - the cutting mat is also sticky enough to hold the mat in place when cutting or measuring but not sticky enough that it will get in the way of the materials being cut Measures 18" x 24" and presents a carefully calibrated measuring grid of 16" x 22". It is 3mm thick.