Glass Chair Mat - Glass Chair MatAdd style and functionality to your workspace with the addition of an innovative InvisiMat chair mat. Crafted of thick tempered glass, its high tech construction is virtually unbreakable and can withstand thousands of pounds of pressure. A beveled edge makes it easy to roll on and off while its crystal clear design is nearly invisible. This modern office accessory is a must have for desks anywhere in the home and works with all floor types including