UNPARALLELED DURABILITY: A Glass Office Chair Mat by Vitrazza is made of full ¼" thick tempered safety glass, designed to 10,000psi and tested to hold over 1,000 lbs. This luxurious and beautiful Glass Chair Mat is also heavy-duty! DESIGNED TO WORK ON ALL FLOOR TYPES: Our proprietary Stabil-a-Dot Bumper System is included with every order. Choose the bumper size for your floor type and adhere them to the bottom of the mat per our directions (simple!). Universal fit – a Vitrazza Glass Chair Mat will protect any floor (carpet, tile, or hardwood), and you get a smooth, durable chair mat that brightens up your workspace. BEAUTIFUL DESIGN: Each Vitrazza Glass Chair Mat features furniture-quality polished edges with a Mini-bevel, as well as FOUR 3" radius corners, adding elegance that complements even the most prestigious office spaces. Choose either Chiaro Standard Clear glass, or for a brighter, optically clear aesthetic choose Luminoso Low-iron Ultra Clear glass. America’s #1 Glass Chair Mat. Buy with confidence. 30-day Satisfaction Guarantee, Free Returns / Exchanges, Fully Insured Shipping, Heavy-Duty Industry-leading Packaging, Transferable Lifetime Warranty Actual Size: 36" x 42" Glass Weight: 32.6 pounds Super-strong 1/4” Thick Safety Glass Made by spec to 10,000 psi Tested to over 1,000 lbs. Invisible Shield Pro 15 Coating to Resist Fine Scratches Furniture-Quality Polished Edges FOUR 3” Radius Corners Mini-Bevel