EverLife Chair Mats For Medium Pile Carpet, L-Workstation w/Lip, 66 x 60, Clear, Sold as 1 Each Cleated chair mat for carpets. For carpets up to 3/4"" thick including padding. All day support for everyday office use. Features AnchorBar? chair mat cleats that hold firmly in place, yet are gentle on carpet and fingers. Protects against wear and tear from chair casters.