Dimex Folding 36" X 48" Chair Mat with Lip for Medium Pile Carpets up to 3/8" Thick Lets carpet beauty show through Extends carpet life Gripper back for stay put performance on carpets Certified to contain a minimum of 33-percent recycled material Limited lifetime guarantee Lets carpet beauty show through Extends carpet life Gripper back for stay put performance on carpets Certified to contain a minimum of 33-percent recycled material Limited 1 Year Manufacturer's Warranty