Protective Vinyl Chair Mat Safeguards & Protects Carpets From Wear & Tear Extending Carpet Life Easy-glide Rolling Surface Provides Effortless Chair Movement Smooth Beveled Edge For Easy Carpet To Mat Transition Studded Bottom Surface For Superior Gripping Power On Carpets Free & Clear Non-phthalate Non-cadmium Formula Promotes A Healthy Work Environment While Offering Exceptional Clarity & Durability Greenguard Gold Certified For Low Chemical Emissions To Ul 2818 Manufacturer's Limited Lifetime Warranty Made In The Usa 45" X 53" For Up To .5" Thick Medium-pile Carpets