Premium Glass All Day Use Chair Mat - All Floor Types, 48 x 60, Rectangular, ClearMake a statement with this luxurious, high performance glass chair mat designed for optimum clarity featuring patented polished edges and radius corners. Extremely durable, 1 4" thick, fully tempered glass mat suitable for combined user and chair weights up to 1000 lbs. Nonstudded bottom surface for use on all pile carpets and hard floor surfaces. Exceptional clarity allows you to show off any flooring, including carpet, tile, hardwood and area rugs.