This chair mat protects carpeted floors from damage caused by moving chair casters while reducing wear on the casters themselves, making it ideal for home or office use. It is thick and sturdy, made of durable Pvc that resists cracking or shattering for long-lasting reliable performance. The studded underside with spikes keeps the mat firmly anchored to low and flat pile carpet floors. It has a clear transparent finish that lets the natural beauty of your carpet show through, it is quick and easy to clean with just a wet cloth. The mat comes rolled up for easy transport, it will flatten out easily once weighted down on its corners. Available colors: 2PCS 48"" X 30"", 36"" X 36"" Round, 36""x48"" with Lip (for Hard Floors), 44"" X 58"" Rectangle, 46"" X 72"" Rectangle, 48"" X 30"" Rectangle, 48"" X 36"" Rectangle, 48"" X 60"" Rectangle