SHAREWIN Clear Chair Floor Mat is made of thick PVC and free of the BPA.Suit for heavy duty floor.It measures 1.5mm in height give your floor and furniture the best protection with this product. Sturdy yet lasting material protects flooring against harsh scuffs and scratches that desk chair can cause. In addition to its considerable strength the hard-flooring mat also impresses with all the comforts you can expect from a high-quality office chair underlay.The mat should be placed smooth side down (facing the floor) textured side up.