ES Robbins Natural Origins Low Pile Chairmat is made from renewable plant sources, this clear chair mat offers an easy-rolling surface at any desk or workstation, eliminates wear on your flooring surface and will not crack. Use to protect loop/berber style carpet up to 3/8 inch thick including padding. Rectangular clear design lets you to see the beauty of the carpet surface under the chair mat. Exclusive AnchorBar cleats hold chair mat firmly in place yet are gentle on carpet and fingers. Natural Origins Chairmat also features a classic straight-edge along with its eco-friendly construction. Renewable plant-based materials help reduce adverse environmental and health impacts. USDA Certified Bio-based chair mat is phthalate-free and cadmium-free.