ADVANTUS RecyClear Chairmat with Lip and Gripper Cleats for Carpet, 36 x 48 Inches, 20 x 12 Inch Lip (50111) Durable chairmat Designed for carpets up to 1/4 inch thick Odorless, free of toxic chemicals and 100% recyclable 36 x 48 inches with 20 x 12 inch lip Harder rolling surface than PVC-based mats