Tired of plastic floor mats that turn yellow and fall apart over time? The invisimat is made of tempered glass, remains crystal clear, and can withstand up to 1500 pounds! The beveled edge makes it easy to roll your chair on and off the mat when needed. Stocked in 3 sizes: small 36 x 46, medium 45 x 53 and large 48 x 60 for your executive configuration.