ES Robbins EverLife AnchorBar 45-Inch by 53-Inch Vinyl Chair Mat with lip for Medium Pile Carpet, Clear GREENGUARD Certified for low chemical emissions to UL 2818 Protects medium pile carpets up to 3/4-Inch thick including padding All day support for everyday office use. Choose a higher pile chair mat if usage is over 8 hours or 200+ lbs AnchorBar chairmat cleat system holds securely, yet is gentle on carpet and fingers Made in the USA; Mfr. Limited Lifetime "No Crack Mat" Warranty