Deflecto Polycarbonate EconoMat, Clear Chair Mat, All Carpet Types Use, Rectangle, Straight Edge, 36" x 48", Clear (CM11142PCCOM) Extremely durable, resilient protective vinyl chair mat prevents wear and tear and extends carpet life Heavy weight chair mat for anytime use on all pile carpets and hard floors Highly rigid surface is perfect for Big & Tall users and heavy executive chairs Exceptional clarity highlights the beauty of your fine flooring Easy-glide, hard rolling surface prevents dishing and provides effortless chair movement Transparent chair mat offers exceptional clarity and is extremely durable and resilient Ideal for big and tall users and heavy executive chairs Environmentally friendly mat is designed for any carpet thickness