Ideal for any size office, frequent to heavy use. Suitable for any carpet thickness. The strongest and most durable chair mat on the market. Made from polycarbonate, the same material used to make bullet-resistant glass and jet fighter cockpit canopy. Fire resistant, odourless and emission free. Perfect for protecting carpet from heavy machines, chairs and high traffic areas. Notched stud design ensures carpet grips for stability. Super smooth surface - slide on, off and around with ease.